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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ | |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <errno.h> | |
23 | #include <signal.h> | |
24 | #include <dirent.h> | |
25 | #include <unistd.h> | |
26 | ||
27 | #include "unit.h" | |
28 | #include "service.h" | |
29 | #include "load-fragment.h" | |
30 | #include "load-dropin.h" | |
31 | #include "log.h" | |
32 | #include "strv.h" | |
33 | #include "unit-name.h" | |
34 | #include "dbus-service.h" | |
35 | #include "special.h" | |
36 | #include "bus-errors.h" | |
37 | #include "exit-status.h" | |
38 | #include "def.h" | |
39 | #include "util.h" | |
40 | ||
41 | #ifdef HAVE_SYSV_COMPAT | |
42 | ||
43 | #define DEFAULT_SYSV_TIMEOUT_USEC (5*USEC_PER_MINUTE) | |
44 | ||
45 | typedef enum RunlevelType { | |
46 | RUNLEVEL_UP, | |
47 | RUNLEVEL_DOWN, | |
48 | RUNLEVEL_SYSINIT | |
49 | } RunlevelType; | |
50 | ||
51 | static const struct { | |
52 | const char *path; | |
53 | const char *target; | |
54 | const RunlevelType type; | |
55 | } rcnd_table[] = { | |
56 | /* Standard SysV runlevels for start-up */ | |
57 | { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP }, | |
58 | { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP }, | |
59 | { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP }, | |
60 | { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP }, | |
61 | { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP }, | |
62 | ||
63 | #ifdef TARGET_SUSE | |
64 | /* SUSE style boot.d */ | |
65 | { "boot.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT }, | |
66 | #endif | |
67 | ||
68 | #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_FRUGALWARE) || defined(TARGET_ANGSTROM) | |
69 | /* Debian style rcS.d */ | |
70 | { "rcS.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT }, | |
71 | #endif | |
72 | ||
73 | /* Standard SysV runlevels for shutdown */ | |
74 | { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN }, | |
75 | { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN } | |
76 | ||
77 | /* Note that the order here matters, as we read the | |
78 | directories in this order, and we want to make sure that | |
79 | sysv_start_priority is known when we first load the | |
80 | unit. And that value we only know from S links. Hence | |
81 | UP/SYSINIT must be read before DOWN */ | |
82 | }; | |
83 | ||
84 | #define RUNLEVELS_UP "12345" | |
85 | /* #define RUNLEVELS_DOWN "06" */ | |
86 | /* #define RUNLEVELS_BOOT "bBsS" */ | |
87 | #endif | |
88 | ||
89 | static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { | |
90 | [SERVICE_DEAD] = UNIT_INACTIVE, | |
91 | [SERVICE_START_PRE] = UNIT_ACTIVATING, | |
92 | [SERVICE_START] = UNIT_ACTIVATING, | |
93 | [SERVICE_START_POST] = UNIT_ACTIVATING, | |
94 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
95 | [SERVICE_EXITED] = UNIT_ACTIVE, | |
96 | [SERVICE_RELOAD] = UNIT_RELOADING, | |
97 | [SERVICE_STOP] = UNIT_DEACTIVATING, | |
98 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, | |
99 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
100 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
101 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
102 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
103 | [SERVICE_FAILED] = UNIT_FAILED, | |
104 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING | |
105 | }; | |
106 | ||
107 | static void service_init(Unit *u) { | |
108 | Service *s = SERVICE(u); | |
109 | ||
110 | assert(u); | |
111 | assert(u->meta.load_state == UNIT_STUB); | |
112 | ||
113 | s->timeout_usec = DEFAULT_TIMEOUT_USEC; | |
114 | s->restart_usec = DEFAULT_RESTART_USEC; | |
115 | s->timer_watch.type = WATCH_INVALID; | |
116 | #ifdef HAVE_SYSV_COMPAT | |
117 | s->sysv_start_priority = -1; | |
118 | s->sysv_start_priority_from_rcnd = -1; | |
119 | #endif | |
120 | s->socket_fd = -1; | |
121 | s->guess_main_pid = true; | |
122 | ||
123 | exec_context_init(&s->exec_context); | |
124 | s->exec_context.std_output = u->meta.manager->default_std_output; | |
125 | s->exec_context.std_error = u->meta.manager->default_std_error; | |
126 | ||
127 | RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5); | |
128 | ||
129 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
130 | } | |
131 | ||
132 | static void service_unwatch_control_pid(Service *s) { | |
133 | assert(s); | |
134 | ||
135 | if (s->control_pid <= 0) | |
136 | return; | |
137 | ||
138 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
139 | s->control_pid = 0; | |
140 | } | |
141 | ||
142 | static void service_unwatch_main_pid(Service *s) { | |
143 | assert(s); | |
144 | ||
145 | if (s->main_pid <= 0) | |
146 | return; | |
147 | ||
148 | unit_unwatch_pid(UNIT(s), s->main_pid); | |
149 | s->main_pid = 0; | |
150 | } | |
151 | ||
152 | static int service_set_main_pid(Service *s, pid_t pid) { | |
153 | pid_t ppid; | |
154 | ||
155 | assert(s); | |
156 | ||
157 | if (pid <= 1) | |
158 | return -EINVAL; | |
159 | ||
160 | if (pid == getpid()) | |
161 | return -EINVAL; | |
162 | ||
163 | s->main_pid = pid; | |
164 | s->main_pid_known = true; | |
165 | ||
166 | if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) { | |
167 | log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.", | |
168 | s->meta.id, (unsigned long) pid); | |
169 | ||
170 | s->main_pid_alien = true; | |
171 | } else | |
172 | s->main_pid_alien = false; | |
173 | ||
174 | exec_status_start(&s->main_exec_status, pid); | |
175 | ||
176 | return 0; | |
177 | } | |
178 | ||
179 | static void service_close_socket_fd(Service *s) { | |
180 | assert(s); | |
181 | ||
182 | if (s->socket_fd < 0) | |
183 | return; | |
184 | ||
185 | close_nointr_nofail(s->socket_fd); | |
186 | s->socket_fd = -1; | |
187 | } | |
188 | ||
189 | static void service_connection_unref(Service *s) { | |
190 | assert(s); | |
191 | ||
192 | if (!s->accept_socket) | |
193 | return; | |
194 | ||
195 | socket_connection_unref(s->accept_socket); | |
196 | s->accept_socket = NULL; | |
197 | } | |
198 | ||
199 | static void service_done(Unit *u) { | |
200 | Service *s = SERVICE(u); | |
201 | ||
202 | assert(s); | |
203 | ||
204 | free(s->pid_file); | |
205 | s->pid_file = NULL; | |
206 | ||
207 | #ifdef HAVE_SYSV_COMPAT | |
208 | free(s->sysv_path); | |
209 | s->sysv_path = NULL; | |
210 | ||
211 | free(s->sysv_runlevels); | |
212 | s->sysv_runlevels = NULL; | |
213 | #endif | |
214 | ||
215 | free(s->status_text); | |
216 | s->status_text = NULL; | |
217 | ||
218 | exec_context_done(&s->exec_context); | |
219 | exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); | |
220 | s->control_command = NULL; | |
221 | s->main_command = NULL; | |
222 | ||
223 | /* This will leak a process, but at least no memory or any of | |
224 | * our resources */ | |
225 | service_unwatch_main_pid(s); | |
226 | service_unwatch_control_pid(s); | |
227 | ||
228 | if (s->bus_name) { | |
229 | unit_unwatch_bus_name(UNIT(u), s->bus_name); | |
230 | free(s->bus_name); | |
231 | s->bus_name = NULL; | |
232 | } | |
233 | ||
234 | service_close_socket_fd(s); | |
235 | service_connection_unref(s); | |
236 | ||
237 | set_free(s->configured_sockets); | |
238 | ||
239 | unit_unwatch_timer(u, &s->timer_watch); | |
240 | } | |
241 | ||
242 | #ifdef HAVE_SYSV_COMPAT | |
243 | static char *sysv_translate_name(const char *name) { | |
244 | char *r; | |
245 | ||
246 | if (!(r = new(char, strlen(name) + sizeof(".service")))) | |
247 | return NULL; | |
248 | ||
249 | #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM) | |
250 | if (endswith(name, ".sh")) | |
251 | /* Drop Debian-style .sh suffix */ | |
252 | strcpy(stpcpy(r, name) - 3, ".service"); | |
253 | #endif | |
254 | #ifdef TARGET_SUSE | |
255 | if (startswith(name, "boot.")) | |
256 | /* Drop SuSE-style boot. prefix */ | |
257 | strcpy(stpcpy(r, name + 5), ".service"); | |
258 | #endif | |
259 | #ifdef TARGET_FRUGALWARE | |
260 | if (startswith(name, "rc.")) | |
261 | /* Drop Frugalware-style rc. prefix */ | |
262 | strcpy(stpcpy(r, name + 3), ".service"); | |
263 | #endif | |
264 | else | |
265 | /* Normal init scripts */ | |
266 | strcpy(stpcpy(r, name), ".service"); | |
267 | ||
268 | return r; | |
269 | } | |
270 | ||
271 | static int sysv_translate_facility(const char *name, const char *filename, char **_r) { | |
272 | ||
273 | /* We silently ignore the $ prefix here. According to the LSB | |
274 | * spec it simply indicates whether something is a | |
275 | * standardized name or a distribution-specific one. Since we | |
276 | * just follow what already exists and do not introduce new | |
277 | * uses or names we don't care who introduced a new name. */ | |
278 | ||
279 | static const char * const table[] = { | |
280 | /* LSB defined facilities */ | |
281 | "local_fs", SPECIAL_LOCAL_FS_TARGET, | |
282 | #ifndef TARGET_MANDRIVA | |
283 | /* Due to unfortunate name selection in Mandriva, | |
284 | * $network is provided by network-up which is ordered | |
285 | * after network which actually starts interfaces. | |
286 | * To break the loop, just ignore it */ | |
287 | "network", SPECIAL_NETWORK_TARGET, | |
288 | #endif | |
289 | "named", SPECIAL_NSS_LOOKUP_TARGET, | |
290 | "portmap", SPECIAL_RPCBIND_TARGET, | |
291 | "remote_fs", SPECIAL_REMOTE_FS_TARGET, | |
292 | "syslog", SPECIAL_SYSLOG_TARGET, | |
293 | "time", SPECIAL_TIME_SYNC_TARGET, | |
294 | ||
295 | /* common extensions */ | |
296 | "mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET, | |
297 | "x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE, | |
298 | "null", NULL, | |
299 | ||
300 | #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM) | |
301 | "mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET, | |
302 | #endif | |
303 | ||
304 | #ifdef TARGET_FEDORA | |
305 | "MTA", SPECIAL_MAIL_TRANSFER_AGENT_TARGET, | |
306 | "smtpdaemon", SPECIAL_MAIL_TRANSFER_AGENT_TARGET, | |
307 | "httpd", SPECIAL_HTTP_DAEMON_TARGET, | |
308 | #endif | |
309 | ||
310 | #ifdef TARGET_SUSE | |
311 | "smtp", SPECIAL_MAIL_TRANSFER_AGENT_TARGET, | |
312 | #endif | |
313 | }; | |
314 | ||
315 | unsigned i; | |
316 | char *r; | |
317 | const char *n; | |
318 | ||
319 | assert(name); | |
320 | assert(_r); | |
321 | ||
322 | n = *name == '$' ? name + 1 : name; | |
323 | ||
324 | for (i = 0; i < ELEMENTSOF(table); i += 2) { | |
325 | ||
326 | if (!streq(table[i], n)) | |
327 | continue; | |
328 | ||
329 | if (!table[i+1]) | |
330 | return 0; | |
331 | ||
332 | if (!(r = strdup(table[i+1]))) | |
333 | return -ENOMEM; | |
334 | ||
335 | goto finish; | |
336 | } | |
337 | ||
338 | /* If we don't know this name, fallback heuristics to figure | |
339 | * out whether something is a target or a service alias. */ | |
340 | ||
341 | if (*name == '$') { | |
342 | if (!unit_prefix_is_valid(n)) | |
343 | return -EINVAL; | |
344 | ||
345 | /* Facilities starting with $ are most likely targets */ | |
346 | r = unit_name_build(n, NULL, ".target"); | |
347 | } else if (filename && streq(name, filename)) | |
348 | /* Names equaling the file name of the services are redundant */ | |
349 | return 0; | |
350 | else | |
351 | /* Everything else we assume to be normal service names */ | |
352 | r = sysv_translate_name(n); | |
353 | ||
354 | if (!r) | |
355 | return -ENOMEM; | |
356 | ||
357 | finish: | |
358 | *_r = r; | |
359 | ||
360 | return 1; | |
361 | } | |
362 | ||
363 | static int sysv_fix_order(Service *s) { | |
364 | Meta *other; | |
365 | int r; | |
366 | ||
367 | assert(s); | |
368 | ||
369 | if (s->sysv_start_priority < 0) | |
370 | return 0; | |
371 | ||
372 | /* For each pair of services where at least one lacks a LSB | |
373 | * header, we use the start priority value to order things. */ | |
374 | ||
375 | LIST_FOREACH(units_by_type, other, s->meta.manager->units_by_type[UNIT_SERVICE]) { | |
376 | Service *t; | |
377 | UnitDependency d; | |
378 | bool special_s, special_t; | |
379 | ||
380 | t = (Service*) other; | |
381 | ||
382 | if (s == t) | |
383 | continue; | |
384 | ||
385 | if (t->meta.load_state != UNIT_LOADED) | |
386 | continue; | |
387 | ||
388 | if (t->sysv_start_priority < 0) | |
389 | continue; | |
390 | ||
391 | /* If both units have modern headers we don't care | |
392 | * about the priorities */ | |
393 | if ((s->meta.fragment_path || s->sysv_has_lsb) && | |
394 | (t->meta.fragment_path || t->sysv_has_lsb)) | |
395 | continue; | |
396 | ||
397 | special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels); | |
398 | special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels); | |
399 | ||
400 | if (special_t && !special_s) | |
401 | d = UNIT_AFTER; | |
402 | else if (special_s && !special_t) | |
403 | d = UNIT_BEFORE; | |
404 | else if (t->sysv_start_priority < s->sysv_start_priority) | |
405 | d = UNIT_AFTER; | |
406 | else if (t->sysv_start_priority > s->sysv_start_priority) | |
407 | d = UNIT_BEFORE; | |
408 | else | |
409 | continue; | |
410 | ||
411 | /* FIXME: Maybe we should compare the name here lexicographically? */ | |
412 | ||
413 | if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0) | |
414 | return r; | |
415 | } | |
416 | ||
417 | return 0; | |
418 | } | |
419 | ||
420 | static ExecCommand *exec_command_new(const char *path, const char *arg1) { | |
421 | ExecCommand *c; | |
422 | ||
423 | if (!(c = new0(ExecCommand, 1))) | |
424 | return NULL; | |
425 | ||
426 | if (!(c->path = strdup(path))) { | |
427 | free(c); | |
428 | return NULL; | |
429 | } | |
430 | ||
431 | if (!(c->argv = strv_new(path, arg1, NULL))) { | |
432 | free(c->path); | |
433 | free(c); | |
434 | return NULL; | |
435 | } | |
436 | ||
437 | return c; | |
438 | } | |
439 | ||
440 | static int sysv_exec_commands(Service *s) { | |
441 | ExecCommand *c; | |
442 | ||
443 | assert(s); | |
444 | assert(s->sysv_path); | |
445 | ||
446 | if (!(c = exec_command_new(s->sysv_path, "start"))) | |
447 | return -ENOMEM; | |
448 | exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c); | |
449 | ||
450 | if (!(c = exec_command_new(s->sysv_path, "stop"))) | |
451 | return -ENOMEM; | |
452 | exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c); | |
453 | ||
454 | if (!(c = exec_command_new(s->sysv_path, "reload"))) | |
455 | return -ENOMEM; | |
456 | exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c); | |
457 | ||
458 | return 0; | |
459 | } | |
460 | ||
461 | static int service_load_sysv_path(Service *s, const char *path) { | |
462 | FILE *f; | |
463 | Unit *u; | |
464 | unsigned line = 0; | |
465 | int r; | |
466 | enum { | |
467 | NORMAL, | |
468 | DESCRIPTION, | |
469 | LSB, | |
470 | LSB_DESCRIPTION | |
471 | } state = NORMAL; | |
472 | char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description; | |
473 | ||
474 | assert(s); | |
475 | assert(path); | |
476 | ||
477 | u = UNIT(s); | |
478 | ||
479 | if (!(f = fopen(path, "re"))) { | |
480 | r = errno == ENOENT ? 0 : -errno; | |
481 | goto finish; | |
482 | } | |
483 | ||
484 | free(s->sysv_path); | |
485 | if (!(s->sysv_path = strdup(path))) { | |
486 | r = -ENOMEM; | |
487 | goto finish; | |
488 | } | |
489 | ||
490 | while (!feof(f)) { | |
491 | char l[LINE_MAX], *t; | |
492 | ||
493 | if (!fgets(l, sizeof(l), f)) { | |
494 | if (feof(f)) | |
495 | break; | |
496 | ||
497 | r = -errno; | |
498 | log_error("Failed to read configuration file '%s': %s", path, strerror(-r)); | |
499 | goto finish; | |
500 | } | |
501 | ||
502 | line++; | |
503 | ||
504 | t = strstrip(l); | |
505 | if (*t != '#') | |
506 | continue; | |
507 | ||
508 | if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) { | |
509 | state = LSB; | |
510 | s->sysv_has_lsb = true; | |
511 | continue; | |
512 | } | |
513 | ||
514 | if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) { | |
515 | state = NORMAL; | |
516 | continue; | |
517 | } | |
518 | ||
519 | t++; | |
520 | t += strspn(t, WHITESPACE); | |
521 | ||
522 | if (state == NORMAL) { | |
523 | ||
524 | /* Try to parse Red Hat style chkconfig headers */ | |
525 | ||
526 | if (startswith_no_case(t, "chkconfig:")) { | |
527 | int start_priority; | |
528 | char runlevels[16], *k; | |
529 | ||
530 | state = NORMAL; | |
531 | ||
532 | if (sscanf(t+10, "%15s %i %*i", | |
533 | runlevels, | |
534 | &start_priority) != 2) { | |
535 | ||
536 | log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line); | |
537 | continue; | |
538 | } | |
539 | ||
540 | /* A start priority gathered from the | |
541 | * symlink farms is preferred over the | |
542 | * data from the LSB header. */ | |
543 | if (start_priority < 0 || start_priority > 99) | |
544 | log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line); | |
545 | else | |
546 | s->sysv_start_priority = start_priority; | |
547 | ||
548 | char_array_0(runlevels); | |
549 | k = delete_chars(runlevels, WHITESPACE "-"); | |
550 | ||
551 | if (k[0]) { | |
552 | char *d; | |
553 | ||
554 | if (!(d = strdup(k))) { | |
555 | r = -ENOMEM; | |
556 | goto finish; | |
557 | } | |
558 | ||
559 | free(s->sysv_runlevels); | |
560 | s->sysv_runlevels = d; | |
561 | } | |
562 | ||
563 | } else if (startswith_no_case(t, "description:")) { | |
564 | ||
565 | size_t k = strlen(t); | |
566 | char *d; | |
567 | const char *j; | |
568 | ||
569 | if (t[k-1] == '\\') { | |
570 | state = DESCRIPTION; | |
571 | t[k-1] = 0; | |
572 | } | |
573 | ||
574 | if ((j = strstrip(t+12)) && *j) { | |
575 | if (!(d = strdup(j))) { | |
576 | r = -ENOMEM; | |
577 | goto finish; | |
578 | } | |
579 | } else | |
580 | d = NULL; | |
581 | ||
582 | free(chkconfig_description); | |
583 | chkconfig_description = d; | |
584 | ||
585 | } else if (startswith_no_case(t, "pidfile:")) { | |
586 | ||
587 | char *fn; | |
588 | ||
589 | state = NORMAL; | |
590 | ||
591 | fn = strstrip(t+8); | |
592 | if (!path_is_absolute(fn)) { | |
593 | log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line); | |
594 | continue; | |
595 | } | |
596 | ||
597 | if (!(fn = strdup(fn))) { | |
598 | r = -ENOMEM; | |
599 | goto finish; | |
600 | } | |
601 | ||
602 | free(s->pid_file); | |
603 | s->pid_file = fn; | |
604 | } | |
605 | ||
606 | } else if (state == DESCRIPTION) { | |
607 | ||
608 | /* Try to parse Red Hat style description | |
609 | * continuation */ | |
610 | ||
611 | size_t k = strlen(t); | |
612 | char *j; | |
613 | ||
614 | if (t[k-1] == '\\') | |
615 | t[k-1] = 0; | |
616 | else | |
617 | state = NORMAL; | |
618 | ||
619 | if ((j = strstrip(t)) && *j) { | |
620 | char *d = NULL; | |
621 | ||
622 | if (chkconfig_description) | |
623 | asprintf(&d, "%s %s", chkconfig_description, j); | |
624 | else | |
625 | d = strdup(j); | |
626 | ||
627 | if (!d) { | |
628 | r = -ENOMEM; | |
629 | goto finish; | |
630 | } | |
631 | ||
632 | free(chkconfig_description); | |
633 | chkconfig_description = d; | |
634 | } | |
635 | ||
636 | } else if (state == LSB || state == LSB_DESCRIPTION) { | |
637 | ||
638 | if (startswith_no_case(t, "Provides:")) { | |
639 | char *i, *w; | |
640 | size_t z; | |
641 | ||
642 | state = LSB; | |
643 | ||
644 | FOREACH_WORD_QUOTED(w, z, t+9, i) { | |
645 | char *n, *m; | |
646 | ||
647 | if (!(n = strndup(w, z))) { | |
648 | r = -ENOMEM; | |
649 | goto finish; | |
650 | } | |
651 | ||
652 | r = sysv_translate_facility(n, file_name_from_path(path), &m); | |
653 | free(n); | |
654 | ||
655 | if (r < 0) | |
656 | goto finish; | |
657 | ||
658 | if (r == 0) | |
659 | continue; | |
660 | ||
661 | if (unit_name_to_type(m) == UNIT_SERVICE) | |
662 | r = unit_add_name(u, m); | |
663 | else | |
664 | /* NB: SysV targets | |
665 | * which are provided | |
666 | * by a service are | |
667 | * pulled in by the | |
668 | * services, as an | |
669 | * indication that the | |
670 | * generic service is | |
671 | * now available. This | |
672 | * is strictly | |
673 | * one-way. The | |
674 | * targets do NOT pull | |
675 | * in the SysV | |
676 | * services! */ | |
677 | r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_WANTS, m, NULL, true); | |
678 | ||
679 | if (r < 0) | |
680 | log_error("[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", path, line, m, strerror(-r)); | |
681 | ||
682 | free(m); | |
683 | } | |
684 | ||
685 | } else if (startswith_no_case(t, "Required-Start:") || | |
686 | startswith_no_case(t, "Should-Start:") || | |
687 | startswith_no_case(t, "X-Start-Before:") || | |
688 | startswith_no_case(t, "X-Start-After:")) { | |
689 | char *i, *w; | |
690 | size_t z; | |
691 | ||
692 | state = LSB; | |
693 | ||
694 | FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) { | |
695 | char *n, *m; | |
696 | ||
697 | if (!(n = strndup(w, z))) { | |
698 | r = -ENOMEM; | |
699 | goto finish; | |
700 | } | |
701 | ||
702 | r = sysv_translate_facility(n, file_name_from_path(path), &m); | |
703 | ||
704 | if (r < 0) { | |
705 | log_error("[%s:%u] Failed to translate LSB dependency %s, ignoring: %s", path, line, n, strerror(-r)); | |
706 | free(n); | |
707 | continue; | |
708 | } | |
709 | ||
710 | free(n); | |
711 | ||
712 | if (r == 0) | |
713 | continue; | |
714 | ||
715 | r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true); | |
716 | ||
717 | if (r < 0) | |
718 | log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", path, line, m, strerror(-r)); | |
719 | ||
720 | free(m); | |
721 | } | |
722 | } else if (startswith_no_case(t, "Default-Start:")) { | |
723 | char *k, *d; | |
724 | ||
725 | state = LSB; | |
726 | ||
727 | k = delete_chars(t+14, WHITESPACE "-"); | |
728 | ||
729 | if (k[0] != 0) { | |
730 | if (!(d = strdup(k))) { | |
731 | r = -ENOMEM; | |
732 | goto finish; | |
733 | } | |
734 | ||
735 | free(s->sysv_runlevels); | |
736 | s->sysv_runlevels = d; | |
737 | } | |
738 | ||
739 | } else if (startswith_no_case(t, "Description:")) { | |
740 | char *d, *j; | |
741 | ||
742 | state = LSB_DESCRIPTION; | |
743 | ||
744 | if ((j = strstrip(t+12)) && *j) { | |
745 | if (!(d = strdup(j))) { | |
746 | r = -ENOMEM; | |
747 | goto finish; | |
748 | } | |
749 | } else | |
750 | d = NULL; | |
751 | ||
752 | free(long_description); | |
753 | long_description = d; | |
754 | ||
755 | } else if (startswith_no_case(t, "Short-Description:")) { | |
756 | char *d, *j; | |
757 | ||
758 | state = LSB; | |
759 | ||
760 | if ((j = strstrip(t+18)) && *j) { | |
761 | if (!(d = strdup(j))) { | |
762 | r = -ENOMEM; | |
763 | goto finish; | |
764 | } | |
765 | } else | |
766 | d = NULL; | |
767 | ||
768 | free(short_description); | |
769 | short_description = d; | |
770 | ||
771 | } else if (startswith_no_case(t, "X-Interactive:")) { | |
772 | int b; | |
773 | ||
774 | if ((b = parse_boolean(strstrip(t+14))) < 0) { | |
775 | log_warning("[%s:%u] Couldn't parse interactive flag. Ignoring.", path, line); | |
776 | continue; | |
777 | } | |
778 | ||
779 | if (b) | |
780 | s->exec_context.std_input = EXEC_INPUT_TTY; | |
781 | else | |
782 | s->exec_context.std_input = EXEC_INPUT_NULL; | |
783 | ||
784 | } else if (state == LSB_DESCRIPTION) { | |
785 | ||
786 | if (startswith(l, "#\t") || startswith(l, "# ")) { | |
787 | char *j; | |
788 | ||
789 | if ((j = strstrip(t)) && *j) { | |
790 | char *d = NULL; | |
791 | ||
792 | if (long_description) | |
793 | asprintf(&d, "%s %s", long_description, t); | |
794 | else | |
795 | d = strdup(j); | |
796 | ||
797 | if (!d) { | |
798 | r = -ENOMEM; | |
799 | goto finish; | |
800 | } | |
801 | ||
802 | free(long_description); | |
803 | long_description = d; | |
804 | } | |
805 | ||
806 | } else | |
807 | state = LSB; | |
808 | } | |
809 | } | |
810 | } | |
811 | ||
812 | if ((r = sysv_exec_commands(s)) < 0) | |
813 | goto finish; | |
814 | ||
815 | if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) { | |
816 | /* If there a runlevels configured for this service | |
817 | * but none of the standard ones, then we assume this | |
818 | * is some special kind of service (which might be | |
819 | * needed for early boot) and don't create any links | |
820 | * to it. */ | |
821 | ||
822 | s->meta.default_dependencies = false; | |
823 | ||
824 | /* Don't timeout special services during boot (like fsck) */ | |
825 | s->timeout_usec = 0; | |
826 | } else | |
827 | s->timeout_usec = DEFAULT_SYSV_TIMEOUT_USEC; | |
828 | ||
829 | /* Special setting for all SysV services */ | |
830 | s->type = SERVICE_FORKING; | |
831 | s->remain_after_exit = true; | |
832 | s->restart = SERVICE_RESTART_NO; | |
833 | s->exec_context.std_output = | |
834 | (s->meta.manager->sysv_console || s->exec_context.std_input == EXEC_INPUT_TTY) | |
835 | ? EXEC_OUTPUT_TTY : s->meta.manager->default_std_output; | |
836 | s->exec_context.kill_mode = KILL_PROCESS; | |
837 | ||
838 | /* We use the long description only if | |
839 | * no short description is set. */ | |
840 | ||
841 | if (short_description) | |
842 | description = short_description; | |
843 | else if (chkconfig_description) | |
844 | description = chkconfig_description; | |
845 | else if (long_description) | |
846 | description = long_description; | |
847 | else | |
848 | description = NULL; | |
849 | ||
850 | if (description) { | |
851 | char *d; | |
852 | ||
853 | if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) { | |
854 | r = -ENOMEM; | |
855 | goto finish; | |
856 | } | |
857 | ||
858 | u->meta.description = d; | |
859 | } | |
860 | ||
861 | /* The priority that has been set in /etc/rcN.d/ hierarchies | |
862 | * takes precedence over what is stored as default in the LSB | |
863 | * header */ | |
864 | if (s->sysv_start_priority_from_rcnd >= 0) | |
865 | s->sysv_start_priority = s->sysv_start_priority_from_rcnd; | |
866 | ||
867 | u->meta.load_state = UNIT_LOADED; | |
868 | r = 0; | |
869 | ||
870 | finish: | |
871 | ||
872 | if (f) | |
873 | fclose(f); | |
874 | ||
875 | free(short_description); | |
876 | free(long_description); | |
877 | free(chkconfig_description); | |
878 | ||
879 | return r; | |
880 | } | |
881 | ||
882 | static int service_load_sysv_name(Service *s, const char *name) { | |
883 | char **p; | |
884 | ||
885 | assert(s); | |
886 | assert(name); | |
887 | ||
888 | /* For SysV services we strip the boot.*, rc.* and *.sh | |
889 | * prefixes/suffixes. */ | |
890 | #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM) | |
891 | if (endswith(name, ".sh.service")) | |
892 | return -ENOENT; | |
893 | #endif | |
894 | ||
895 | #ifdef TARGET_SUSE | |
896 | if (startswith(name, "boot.")) | |
897 | return -ENOENT; | |
898 | #endif | |
899 | ||
900 | #ifdef TARGET_FRUGALWARE | |
901 | if (startswith(name, "rc.")) | |
902 | return -ENOENT; | |
903 | #endif | |
904 | ||
905 | STRV_FOREACH(p, s->meta.manager->lookup_paths.sysvinit_path) { | |
906 | char *path; | |
907 | int r; | |
908 | ||
909 | if (asprintf(&path, "%s/%s", *p, name) < 0) | |
910 | return -ENOMEM; | |
911 | ||
912 | assert(endswith(path, ".service")); | |
913 | path[strlen(path)-8] = 0; | |
914 | ||
915 | r = service_load_sysv_path(s, path); | |
916 | ||
917 | #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM) | |
918 | if (r >= 0 && s->meta.load_state == UNIT_STUB) { | |
919 | /* Try Debian style *.sh source'able init scripts */ | |
920 | strcat(path, ".sh"); | |
921 | r = service_load_sysv_path(s, path); | |
922 | } | |
923 | #endif | |
924 | free(path); | |
925 | ||
926 | #ifdef TARGET_SUSE | |
927 | if (r >= 0 && s->meta.load_state == UNIT_STUB) { | |
928 | /* Try SUSE style boot.* init scripts */ | |
929 | ||
930 | if (asprintf(&path, "%s/boot.%s", *p, name) < 0) | |
931 | return -ENOMEM; | |
932 | ||
933 | /* Drop .service suffix */ | |
934 | path[strlen(path)-8] = 0; | |
935 | r = service_load_sysv_path(s, path); | |
936 | free(path); | |
937 | } | |
938 | #endif | |
939 | ||
940 | #ifdef TARGET_FRUGALWARE | |
941 | if (r >= 0 && s->meta.load_state == UNIT_STUB) { | |
942 | /* Try Frugalware style rc.* init scripts */ | |
943 | ||
944 | if (asprintf(&path, "%s/rc.%s", *p, name) < 0) | |
945 | return -ENOMEM; | |
946 | ||
947 | /* Drop .service suffix */ | |
948 | path[strlen(path)-8] = 0; | |
949 | r = service_load_sysv_path(s, path); | |
950 | free(path); | |
951 | } | |
952 | #endif | |
953 | ||
954 | if (r < 0) | |
955 | return r; | |
956 | ||
957 | if ((s->meta.load_state != UNIT_STUB)) | |
958 | break; | |
959 | } | |
960 | ||
961 | return 0; | |
962 | } | |
963 | ||
964 | static int service_load_sysv(Service *s) { | |
965 | const char *t; | |
966 | Iterator i; | |
967 | int r; | |
968 | ||
969 | assert(s); | |
970 | ||
971 | /* Load service data from SysV init scripts, preferably with | |
972 | * LSB headers ... */ | |
973 | ||
974 | if (strv_isempty(s->meta.manager->lookup_paths.sysvinit_path)) | |
975 | return 0; | |
976 | ||
977 | if ((t = s->meta.id)) | |
978 | if ((r = service_load_sysv_name(s, t)) < 0) | |
979 | return r; | |
980 | ||
981 | if (s->meta.load_state == UNIT_STUB) | |
982 | SET_FOREACH(t, s->meta.names, i) { | |
983 | if (t == s->meta.id) | |
984 | continue; | |
985 | ||
986 | if ((r = service_load_sysv_name(s, t)) < 0) | |
987 | return r; | |
988 | ||
989 | if (s->meta.load_state != UNIT_STUB) | |
990 | break; | |
991 | } | |
992 | ||
993 | return 0; | |
994 | } | |
995 | #endif | |
996 | ||
997 | static int fsck_fix_order(Service *s) { | |
998 | Meta *other; | |
999 | int r; | |
1000 | ||
1001 | assert(s); | |
1002 | ||
1003 | if (s->fsck_passno <= 0) | |
1004 | return 0; | |
1005 | ||
1006 | /* For each pair of services where both have an fsck priority | |
1007 | * we order things based on it. */ | |
1008 | ||
1009 | LIST_FOREACH(units_by_type, other, s->meta.manager->units_by_type[UNIT_SERVICE]) { | |
1010 | Service *t; | |
1011 | UnitDependency d; | |
1012 | ||
1013 | t = (Service*) other; | |
1014 | ||
1015 | if (s == t) | |
1016 | continue; | |
1017 | ||
1018 | if (t->meta.load_state != UNIT_LOADED) | |
1019 | continue; | |
1020 | ||
1021 | if (t->fsck_passno <= 0) | |
1022 | continue; | |
1023 | ||
1024 | if (t->fsck_passno < s->fsck_passno) | |
1025 | d = UNIT_AFTER; | |
1026 | else if (t->fsck_passno > s->fsck_passno) | |
1027 | d = UNIT_BEFORE; | |
1028 | else | |
1029 | continue; | |
1030 | ||
1031 | if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0) | |
1032 | return r; | |
1033 | } | |
1034 | ||
1035 | return 0; | |
1036 | } | |
1037 | ||
1038 | static int service_verify(Service *s) { | |
1039 | assert(s); | |
1040 | ||
1041 | if (s->meta.load_state != UNIT_LOADED) | |
1042 | return 0; | |
1043 | ||
1044 | if (!s->exec_command[SERVICE_EXEC_START]) { | |
1045 | log_error("%s lacks ExecStart setting. Refusing.", s->meta.id); | |
1046 | return -EINVAL; | |
1047 | } | |
1048 | ||
1049 | if (s->type != SERVICE_ONESHOT && | |
1050 | s->exec_command[SERVICE_EXEC_START]->command_next) { | |
1051 | log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", s->meta.id); | |
1052 | return -EINVAL; | |
1053 | } | |
1054 | ||
1055 | if (s->type == SERVICE_ONESHOT && | |
1056 | s->exec_command[SERVICE_EXEC_RELOAD]) { | |
1057 | log_error("%s has an ExecReload setting, which is not allowed for Type=oneshot services. Refusing.", s->meta.id); | |
1058 | return -EINVAL; | |
1059 | } | |
1060 | ||
1061 | if (s->type == SERVICE_DBUS && !s->bus_name) { | |
1062 | log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", s->meta.id); | |
1063 | return -EINVAL; | |
1064 | } | |
1065 | ||
1066 | if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) { | |
1067 | log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id); | |
1068 | return -EINVAL; | |
1069 | } | |
1070 | ||
1071 | return 0; | |
1072 | } | |
1073 | ||
1074 | static int service_add_default_dependencies(Service *s) { | |
1075 | int r; | |
1076 | ||
1077 | assert(s); | |
1078 | ||
1079 | /* Add a number of automatic dependencies useful for the | |
1080 | * majority of services. */ | |
1081 | ||
1082 | /* First, pull in base system */ | |
1083 | if (s->meta.manager->running_as == MANAGER_SYSTEM) { | |
1084 | ||
1085 | if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0) | |
1086 | return r; | |
1087 | ||
1088 | } else if (s->meta.manager->running_as == MANAGER_USER) { | |
1089 | ||
1090 | if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0) | |
1091 | return r; | |
1092 | } | |
1093 | ||
1094 | /* Second, activate normal shutdown */ | |
1095 | return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); | |
1096 | } | |
1097 | ||
1098 | static int service_load(Unit *u) { | |
1099 | int r; | |
1100 | Service *s = SERVICE(u); | |
1101 | ||
1102 | assert(s); | |
1103 | ||
1104 | /* Load a .service file */ | |
1105 | if ((r = unit_load_fragment(u)) < 0) | |
1106 | return r; | |
1107 | ||
1108 | #ifdef HAVE_SYSV_COMPAT | |
1109 | /* Load a classic init script as a fallback, if we couldn't find anything */ | |
1110 | if (u->meta.load_state == UNIT_STUB) | |
1111 | if ((r = service_load_sysv(s)) < 0) | |
1112 | return r; | |
1113 | #endif | |
1114 | ||
1115 | /* Still nothing found? Then let's give up */ | |
1116 | if (u->meta.load_state == UNIT_STUB) | |
1117 | return -ENOENT; | |
1118 | ||
1119 | /* We were able to load something, then let's add in the | |
1120 | * dropin directories. */ | |
1121 | if ((r = unit_load_dropin(unit_follow_merge(u))) < 0) | |
1122 | return r; | |
1123 | ||
1124 | /* This is a new unit? Then let's add in some extras */ | |
1125 | if (u->meta.load_state == UNIT_LOADED) { | |
1126 | if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0) | |
1127 | return r; | |
1128 | ||
1129 | if ((r = unit_add_default_cgroups(u)) < 0) | |
1130 | return r; | |
1131 | ||
1132 | #ifdef HAVE_SYSV_COMPAT | |
1133 | if ((r = sysv_fix_order(s)) < 0) | |
1134 | return r; | |
1135 | #endif | |
1136 | ||
1137 | if ((r = fsck_fix_order(s)) < 0) | |
1138 | return r; | |
1139 | ||
1140 | if (s->bus_name) | |
1141 | if ((r = unit_watch_bus_name(u, s->bus_name)) < 0) | |
1142 | return r; | |
1143 | ||
1144 | if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE) | |
1145 | s->notify_access = NOTIFY_MAIN; | |
1146 | ||
1147 | if (s->type == SERVICE_DBUS || s->bus_name) | |
1148 | if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true)) < 0) | |
1149 | return r; | |
1150 | ||
1151 | if (s->meta.default_dependencies) | |
1152 | if ((r = service_add_default_dependencies(s)) < 0) | |
1153 | return r; | |
1154 | } | |
1155 | ||
1156 | return service_verify(s); | |
1157 | } | |
1158 | ||
1159 | static void service_dump(Unit *u, FILE *f, const char *prefix) { | |
1160 | ||
1161 | ServiceExecCommand c; | |
1162 | Service *s = SERVICE(u); | |
1163 | const char *prefix2; | |
1164 | char *p2; | |
1165 | ||
1166 | assert(s); | |
1167 | ||
1168 | p2 = strappend(prefix, "\t"); | |
1169 | prefix2 = p2 ? p2 : prefix; | |
1170 | ||
1171 | fprintf(f, | |
1172 | "%sService State: %s\n" | |
1173 | "%sPermissionsStartOnly: %s\n" | |
1174 | "%sRootDirectoryStartOnly: %s\n" | |
1175 | "%sRemainAfterExit: %s\n" | |
1176 | "%sGuessMainPID: %s\n" | |
1177 | "%sType: %s\n" | |
1178 | "%sRestart: %s\n" | |
1179 | "%sNotifyAccess: %s\n", | |
1180 | prefix, service_state_to_string(s->state), | |
1181 | prefix, yes_no(s->permissions_start_only), | |
1182 | prefix, yes_no(s->root_directory_start_only), | |
1183 | prefix, yes_no(s->remain_after_exit), | |
1184 | prefix, yes_no(s->guess_main_pid), | |
1185 | prefix, service_type_to_string(s->type), | |
1186 | prefix, service_restart_to_string(s->restart), | |
1187 | prefix, notify_access_to_string(s->notify_access)); | |
1188 | ||
1189 | if (s->control_pid > 0) | |
1190 | fprintf(f, | |
1191 | "%sControl PID: %lu\n", | |
1192 | prefix, (unsigned long) s->control_pid); | |
1193 | ||
1194 | if (s->main_pid > 0) | |
1195 | fprintf(f, | |
1196 | "%sMain PID: %lu\n" | |
1197 | "%sMain PID Known: %s\n" | |
1198 | "%sMain PID Alien: %s\n", | |
1199 | prefix, (unsigned long) s->main_pid, | |
1200 | prefix, yes_no(s->main_pid_known), | |
1201 | prefix, yes_no(s->main_pid_alien)); | |
1202 | ||
1203 | if (s->pid_file) | |
1204 | fprintf(f, | |
1205 | "%sPIDFile: %s\n", | |
1206 | prefix, s->pid_file); | |
1207 | ||
1208 | if (s->bus_name) | |
1209 | fprintf(f, | |
1210 | "%sBusName: %s\n" | |
1211 | "%sBus Name Good: %s\n", | |
1212 | prefix, s->bus_name, | |
1213 | prefix, yes_no(s->bus_name_good)); | |
1214 | ||
1215 | exec_context_dump(&s->exec_context, f, prefix); | |
1216 | ||
1217 | for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { | |
1218 | ||
1219 | if (!s->exec_command[c]) | |
1220 | continue; | |
1221 | ||
1222 | fprintf(f, "%s-> %s:\n", | |
1223 | prefix, service_exec_command_to_string(c)); | |
1224 | ||
1225 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
1226 | } | |
1227 | ||
1228 | #ifdef HAVE_SYSV_COMPAT | |
1229 | if (s->sysv_path) | |
1230 | fprintf(f, | |
1231 | "%sSysV Init Script Path: %s\n" | |
1232 | "%sSysV Init Script has LSB Header: %s\n" | |
1233 | "%sSysVEnabled: %s\n", | |
1234 | prefix, s->sysv_path, | |
1235 | prefix, yes_no(s->sysv_has_lsb), | |
1236 | prefix, yes_no(s->sysv_enabled)); | |
1237 | ||
1238 | if (s->sysv_start_priority >= 0) | |
1239 | fprintf(f, | |
1240 | "%sSysVStartPriority: %i\n", | |
1241 | prefix, s->sysv_start_priority); | |
1242 | ||
1243 | if (s->sysv_runlevels) | |
1244 | fprintf(f, "%sSysVRunLevels: %s\n", | |
1245 | prefix, s->sysv_runlevels); | |
1246 | #endif | |
1247 | ||
1248 | if (s->fsck_passno > 0) | |
1249 | fprintf(f, | |
1250 | "%sFsckPassNo: %i\n", | |
1251 | prefix, s->fsck_passno); | |
1252 | ||
1253 | if (s->status_text) | |
1254 | fprintf(f, "%sStatus Text: %s\n", | |
1255 | prefix, s->status_text); | |
1256 | ||
1257 | free(p2); | |
1258 | } | |
1259 | ||
1260 | static int service_load_pid_file(Service *s) { | |
1261 | char *k; | |
1262 | int r; | |
1263 | pid_t pid; | |
1264 | ||
1265 | assert(s); | |
1266 | ||
1267 | if (s->main_pid_known) | |
1268 | return 0; | |
1269 | ||
1270 | if (!s->pid_file) | |
1271 | return 0; | |
1272 | ||
1273 | if ((r = read_one_line_file(s->pid_file, &k)) < 0) | |
1274 | return r; | |
1275 | ||
1276 | r = parse_pid(k, &pid); | |
1277 | free(k); | |
1278 | ||
1279 | if (r < 0) | |
1280 | return r; | |
1281 | ||
1282 | if (kill(pid, 0) < 0 && errno != EPERM) { | |
1283 | log_warning("PID %lu read from file %s does not exist. Your service or init script might be broken.", | |
1284 | (unsigned long) pid, s->pid_file); | |
1285 | return -ESRCH; | |
1286 | } | |
1287 | ||
1288 | if ((r = service_set_main_pid(s, pid)) < 0) | |
1289 | return r; | |
1290 | ||
1291 | if ((r = unit_watch_pid(UNIT(s), pid)) < 0) | |
1292 | /* FIXME: we need to do something here */ | |
1293 | return r; | |
1294 | ||
1295 | return 0; | |
1296 | } | |
1297 | ||
1298 | static int service_search_main_pid(Service *s) { | |
1299 | pid_t pid; | |
1300 | int r; | |
1301 | ||
1302 | assert(s); | |
1303 | ||
1304 | /* If we know it anyway, don't ever fallback to unreliable | |
1305 | * heuristics */ | |
1306 | if (s->main_pid_known) | |
1307 | return 0; | |
1308 | ||
1309 | if (!s->guess_main_pid) | |
1310 | return 0; | |
1311 | ||
1312 | assert(s->main_pid <= 0); | |
1313 | ||
1314 | if ((pid = cgroup_bonding_search_main_pid_list(s->meta.cgroup_bondings)) <= 0) | |
1315 | return -ENOENT; | |
1316 | ||
1317 | if ((r = service_set_main_pid(s, pid)) < 0) | |
1318 | return r; | |
1319 | ||
1320 | if ((r = unit_watch_pid(UNIT(s), pid)) < 0) | |
1321 | /* FIXME: we need to do something here */ | |
1322 | return r; | |
1323 | ||
1324 | return 0; | |
1325 | } | |
1326 | ||
1327 | static int service_get_sockets(Service *s, Set **_set) { | |
1328 | Set *set; | |
1329 | Iterator i; | |
1330 | char *t; | |
1331 | int r; | |
1332 | ||
1333 | assert(s); | |
1334 | assert(_set); | |
1335 | ||
1336 | if (s->socket_fd >= 0) | |
1337 | return 0; | |
1338 | ||
1339 | if (!set_isempty(s->configured_sockets)) | |
1340 | return 0; | |
1341 | ||
1342 | /* Collects all Socket objects that belong to this | |
1343 | * service. Note that a service might have multiple sockets | |
1344 | * via multiple names. */ | |
1345 | ||
1346 | if (!(set = set_new(NULL, NULL))) | |
1347 | return -ENOMEM; | |
1348 | ||
1349 | SET_FOREACH(t, s->meta.names, i) { | |
1350 | char *k; | |
1351 | Unit *p; | |
1352 | ||
1353 | /* Look for all socket objects that go by any of our | |
1354 | * units and collect their fds */ | |
1355 | ||
1356 | if (!(k = unit_name_change_suffix(t, ".socket"))) { | |
1357 | r = -ENOMEM; | |
1358 | goto fail; | |
1359 | } | |
1360 | ||
1361 | p = manager_get_unit(s->meta.manager, k); | |
1362 | free(k); | |
1363 | ||
1364 | if (!p) | |
1365 | continue; | |
1366 | ||
1367 | if ((r = set_put(set, p)) < 0) | |
1368 | goto fail; | |
1369 | } | |
1370 | ||
1371 | *_set = set; | |
1372 | return 0; | |
1373 | ||
1374 | fail: | |
1375 | set_free(set); | |
1376 | return r; | |
1377 | } | |
1378 | ||
1379 | static int service_notify_sockets_dead(Service *s) { | |
1380 | Iterator i; | |
1381 | Set *set, *free_set = NULL; | |
1382 | Socket *sock; | |
1383 | int r; | |
1384 | ||
1385 | assert(s); | |
1386 | ||
1387 | /* Notifies all our sockets when we die */ | |
1388 | ||
1389 | if (s->socket_fd >= 0) | |
1390 | return 0; | |
1391 | ||
1392 | if (!set_isempty(s->configured_sockets)) | |
1393 | set = s->configured_sockets; | |
1394 | else { | |
1395 | if ((r = service_get_sockets(s, &free_set)) < 0) | |
1396 | return r; | |
1397 | ||
1398 | set = free_set; | |
1399 | } | |
1400 | ||
1401 | SET_FOREACH(sock, set, i) | |
1402 | socket_notify_service_dead(sock); | |
1403 | ||
1404 | set_free(free_set); | |
1405 | ||
1406 | return 0; | |
1407 | } | |
1408 | ||
1409 | static void service_set_state(Service *s, ServiceState state) { | |
1410 | ServiceState old_state; | |
1411 | assert(s); | |
1412 | ||
1413 | old_state = s->state; | |
1414 | s->state = state; | |
1415 | ||
1416 | if (state != SERVICE_START_PRE && | |
1417 | state != SERVICE_START && | |
1418 | state != SERVICE_START_POST && | |
1419 | state != SERVICE_RELOAD && | |
1420 | state != SERVICE_STOP && | |
1421 | state != SERVICE_STOP_SIGTERM && | |
1422 | state != SERVICE_STOP_SIGKILL && | |
1423 | state != SERVICE_STOP_POST && | |
1424 | state != SERVICE_FINAL_SIGTERM && | |
1425 | state != SERVICE_FINAL_SIGKILL && | |
1426 | state != SERVICE_AUTO_RESTART) | |
1427 | unit_unwatch_timer(UNIT(s), &s->timer_watch); | |
1428 | ||
1429 | if (state != SERVICE_START && | |
1430 | state != SERVICE_START_POST && | |
1431 | state != SERVICE_RUNNING && | |
1432 | state != SERVICE_RELOAD && | |
1433 | state != SERVICE_STOP && | |
1434 | state != SERVICE_STOP_SIGTERM && | |
1435 | state != SERVICE_STOP_SIGKILL) { | |
1436 | service_unwatch_main_pid(s); | |
1437 | s->main_command = NULL; | |
1438 | } | |
1439 | ||
1440 | if (state != SERVICE_START_PRE && | |
1441 | state != SERVICE_START && | |
1442 | state != SERVICE_START_POST && | |
1443 | state != SERVICE_RELOAD && | |
1444 | state != SERVICE_STOP && | |
1445 | state != SERVICE_STOP_SIGTERM && | |
1446 | state != SERVICE_STOP_SIGKILL && | |
1447 | state != SERVICE_STOP_POST && | |
1448 | state != SERVICE_FINAL_SIGTERM && | |
1449 | state != SERVICE_FINAL_SIGKILL) { | |
1450 | service_unwatch_control_pid(s); | |
1451 | s->control_command = NULL; | |
1452 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
1453 | } | |
1454 | ||
1455 | if (state == SERVICE_DEAD || | |
1456 | state == SERVICE_STOP || | |
1457 | state == SERVICE_STOP_SIGTERM || | |
1458 | state == SERVICE_STOP_SIGKILL || | |
1459 | state == SERVICE_STOP_POST || | |
1460 | state == SERVICE_FINAL_SIGTERM || | |
1461 | state == SERVICE_FINAL_SIGKILL || | |
1462 | state == SERVICE_FAILED || | |
1463 | state == SERVICE_AUTO_RESTART) | |
1464 | service_notify_sockets_dead(s); | |
1465 | ||
1466 | if (state != SERVICE_START_PRE && | |
1467 | state != SERVICE_START && | |
1468 | state != SERVICE_START_POST && | |
1469 | state != SERVICE_RUNNING && | |
1470 | state != SERVICE_RELOAD && | |
1471 | state != SERVICE_STOP && | |
1472 | state != SERVICE_STOP_SIGTERM && | |
1473 | state != SERVICE_STOP_SIGKILL && | |
1474 | state != SERVICE_STOP_POST && | |
1475 | state != SERVICE_FINAL_SIGTERM && | |
1476 | state != SERVICE_FINAL_SIGKILL && | |
1477 | !(state == SERVICE_DEAD && s->meta.job)) { | |
1478 | service_close_socket_fd(s); | |
1479 | service_connection_unref(s); | |
1480 | } | |
1481 | ||
1482 | /* For the inactive states unit_notify() will trim the cgroup, | |
1483 | * but for exit we have to do that ourselves... */ | |
1484 | if (state == SERVICE_EXITED && s->meta.manager->n_deserializing <= 0) | |
1485 | cgroup_bonding_trim_list(s->meta.cgroup_bondings, true); | |
1486 | ||
1487 | if (old_state != state) | |
1488 | log_debug("%s changed %s -> %s", s->meta.id, service_state_to_string(old_state), service_state_to_string(state)); | |
1489 | ||
1490 | unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], !s->reload_failure); | |
1491 | s->reload_failure = false; | |
1492 | } | |
1493 | ||
1494 | static int service_coldplug(Unit *u) { | |
1495 | Service *s = SERVICE(u); | |
1496 | int r; | |
1497 | ||
1498 | assert(s); | |
1499 | assert(s->state == SERVICE_DEAD); | |
1500 | ||
1501 | if (s->deserialized_state != s->state) { | |
1502 | ||
1503 | if (s->deserialized_state == SERVICE_START_PRE || | |
1504 | s->deserialized_state == SERVICE_START || | |
1505 | s->deserialized_state == SERVICE_START_POST || | |
1506 | s->deserialized_state == SERVICE_RELOAD || | |
1507 | s->deserialized_state == SERVICE_STOP || | |
1508 | s->deserialized_state == SERVICE_STOP_SIGTERM || | |
1509 | s->deserialized_state == SERVICE_STOP_SIGKILL || | |
1510 | s->deserialized_state == SERVICE_STOP_POST || | |
1511 | s->deserialized_state == SERVICE_FINAL_SIGTERM || | |
1512 | s->deserialized_state == SERVICE_FINAL_SIGKILL || | |
1513 | s->deserialized_state == SERVICE_AUTO_RESTART) { | |
1514 | ||
1515 | if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) { | |
1516 | usec_t k; | |
1517 | ||
1518 | k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec; | |
1519 | ||
1520 | if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0) | |
1521 | return r; | |
1522 | } | |
1523 | } | |
1524 | ||
1525 | if ((s->deserialized_state == SERVICE_START && | |
1526 | (s->type == SERVICE_FORKING || | |
1527 | s->type == SERVICE_DBUS || | |
1528 | s->type == SERVICE_ONESHOT || | |
1529 | s->type == SERVICE_NOTIFY)) || | |
1530 | s->deserialized_state == SERVICE_START_POST || | |
1531 | s->deserialized_state == SERVICE_RUNNING || | |
1532 | s->deserialized_state == SERVICE_RELOAD || | |
1533 | s->deserialized_state == SERVICE_STOP || | |
1534 | s->deserialized_state == SERVICE_STOP_SIGTERM || | |
1535 | s->deserialized_state == SERVICE_STOP_SIGKILL) | |
1536 | if (s->main_pid > 0) | |
1537 | if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0) | |
1538 | return r; | |
1539 | ||
1540 | if (s->deserialized_state == SERVICE_START_PRE || | |
1541 | s->deserialized_state == SERVICE_START || | |
1542 | s->deserialized_state == SERVICE_START_POST || | |
1543 | s->deserialized_state == SERVICE_RELOAD || | |
1544 | s->deserialized_state == SERVICE_STOP || | |
1545 | s->deserialized_state == SERVICE_STOP_SIGTERM || | |
1546 | s->deserialized_state == SERVICE_STOP_SIGKILL || | |
1547 | s->deserialized_state == SERVICE_STOP_POST || | |
1548 | s->deserialized_state == SERVICE_FINAL_SIGTERM || | |
1549 | s->deserialized_state == SERVICE_FINAL_SIGKILL) | |
1550 | if (s->control_pid > 0) | |
1551 | if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0) | |
1552 | return r; | |
1553 | ||
1554 | service_set_state(s, s->deserialized_state); | |
1555 | } | |
1556 | ||
1557 | return 0; | |
1558 | } | |
1559 | ||
1560 | static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) { | |
1561 | Iterator i; | |
1562 | int r; | |
1563 | int *rfds = NULL; | |
1564 | unsigned rn_fds = 0; | |
1565 | Set *set, *free_set = NULL; | |
1566 | Socket *sock; | |
1567 | ||
1568 | assert(s); | |
1569 | assert(fds); | |
1570 | assert(n_fds); | |
1571 | ||
1572 | if (s->socket_fd >= 0) | |
1573 | return 0; | |
1574 | ||
1575 | if (!set_isempty(s->configured_sockets)) | |
1576 | set = s->configured_sockets; | |
1577 | else { | |
1578 | if ((r = service_get_sockets(s, &free_set)) < 0) | |
1579 | return r; | |
1580 | ||
1581 | set = free_set; | |
1582 | } | |
1583 | ||
1584 | SET_FOREACH(sock, set, i) { | |
1585 | int *cfds; | |
1586 | unsigned cn_fds; | |
1587 | ||
1588 | if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0) | |
1589 | goto fail; | |
1590 | ||
1591 | if (!cfds) | |
1592 | continue; | |
1593 | ||
1594 | if (!rfds) { | |
1595 | rfds = cfds; | |
1596 | rn_fds = cn_fds; | |
1597 | } else { | |
1598 | int *t; | |
1599 | ||
1600 | if (!(t = new(int, rn_fds+cn_fds))) { | |
1601 | free(cfds); | |
1602 | r = -ENOMEM; | |
1603 | goto fail; | |
1604 | } | |
1605 | ||
1606 | memcpy(t, rfds, rn_fds * sizeof(int)); | |
1607 | memcpy(t+rn_fds, cfds, cn_fds * sizeof(int)); | |
1608 | free(rfds); | |
1609 | free(cfds); | |
1610 | ||
1611 | rfds = t; | |
1612 | rn_fds = rn_fds+cn_fds; | |
1613 | } | |
1614 | } | |
1615 | ||
1616 | *fds = rfds; | |
1617 | *n_fds = rn_fds; | |
1618 | ||
1619 | set_free(free_set); | |
1620 | ||
1621 | return 0; | |
1622 | ||
1623 | fail: | |
1624 | set_free(set); | |
1625 | free(rfds); | |
1626 | ||
1627 | return r; | |
1628 | } | |
1629 | ||
1630 | static int service_spawn( | |
1631 | Service *s, | |
1632 | ExecCommand *c, | |
1633 | bool timeout, | |
1634 | bool pass_fds, | |
1635 | bool apply_permissions, | |
1636 | bool apply_chroot, | |
1637 | bool apply_tty_stdin, | |
1638 | bool set_notify_socket, | |
1639 | pid_t *_pid) { | |
1640 | ||
1641 | pid_t pid; | |
1642 | int r; | |
1643 | int *fds = NULL, *fdsbuf = NULL; | |
1644 | unsigned n_fds = 0, n_env = 0; | |
1645 | char **argv = NULL, **final_env = NULL, **our_env = NULL; | |
1646 | ||
1647 | assert(s); | |
1648 | assert(c); | |
1649 | assert(_pid); | |
1650 | ||
1651 | if (pass_fds || | |
1652 | s->exec_context.std_input == EXEC_INPUT_SOCKET || | |
1653 | s->exec_context.std_output == EXEC_OUTPUT_SOCKET || | |
1654 | s->exec_context.std_error == EXEC_OUTPUT_SOCKET) { | |
1655 | ||
1656 | if (s->socket_fd >= 0) { | |
1657 | fds = &s->socket_fd; | |
1658 | n_fds = 1; | |
1659 | } else { | |
1660 | if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0) | |
1661 | goto fail; | |
1662 | ||
1663 | fds = fdsbuf; | |
1664 | } | |
1665 | } | |
1666 | ||
1667 | if (timeout && s->timeout_usec) { | |
1668 | if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) | |
1669 | goto fail; | |
1670 | } else | |
1671 | unit_unwatch_timer(UNIT(s), &s->timer_watch); | |
1672 | ||
1673 | if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) { | |
1674 | r = -ENOMEM; | |
1675 | goto fail; | |
1676 | } | |
1677 | ||
1678 | if (!(our_env = new0(char*, 4))) { | |
1679 | r = -ENOMEM; | |
1680 | goto fail; | |
1681 | } | |
1682 | ||
1683 | if (set_notify_socket) | |
1684 | if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", s->meta.manager->notify_socket) < 0) { | |
1685 | r = -ENOMEM; | |
1686 | goto fail; | |
1687 | } | |
1688 | ||
1689 | if (s->main_pid > 0) | |
1690 | if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) { | |
1691 | r = -ENOMEM; | |
1692 | goto fail; | |
1693 | } | |
1694 | ||
1695 | if (!(final_env = strv_env_merge(2, | |
1696 | s->meta.manager->environment, | |
1697 | our_env, | |
1698 | NULL))) { | |
1699 | r = -ENOMEM; | |
1700 | goto fail; | |
1701 | } | |
1702 | ||
1703 | r = exec_spawn(c, | |
1704 | argv, | |
1705 | &s->exec_context, | |
1706 | fds, n_fds, | |
1707 | final_env, | |
1708 | apply_permissions, | |
1709 | apply_chroot, | |
1710 | apply_tty_stdin, | |
1711 | s->meta.manager->confirm_spawn, | |
1712 | s->meta.cgroup_bondings, | |
1713 | &pid); | |
1714 | ||
1715 | if (r < 0) | |
1716 | goto fail; | |
1717 | ||
1718 | ||
1719 | if ((r = unit_watch_pid(UNIT(s), pid)) < 0) | |
1720 | /* FIXME: we need to do something here */ | |
1721 | goto fail; | |
1722 | ||
1723 | free(fdsbuf); | |
1724 | strv_free(argv); | |
1725 | strv_free(our_env); | |
1726 | strv_free(final_env); | |
1727 | ||
1728 | *_pid = pid; | |
1729 | ||
1730 | return 0; | |
1731 | ||
1732 | fail: | |
1733 | free(fdsbuf); | |
1734 | strv_free(argv); | |
1735 | strv_free(our_env); | |
1736 | strv_free(final_env); | |
1737 | ||
1738 | if (timeout) | |
1739 | unit_unwatch_timer(UNIT(s), &s->timer_watch); | |
1740 | ||
1741 | return r; | |
1742 | } | |
1743 | ||
1744 | static int main_pid_good(Service *s) { | |
1745 | assert(s); | |
1746 | ||
1747 | /* Returns 0 if the pid is dead, 1 if it is good, -1 if we | |
1748 | * don't know */ | |
1749 | ||
1750 | /* If we know the pid file, then lets just check if it is | |
1751 | * still valid */ | |
1752 | if (s->main_pid_known) { | |
1753 | ||
1754 | /* If it's an alien child let's check if it is still | |
1755 | * alive ... */ | |
1756 | if (s->main_pid_alien) | |
1757 | return kill(s->main_pid, 0) >= 0 || errno != ESRCH; | |
1758 | ||
1759 | /* .. otherwise assume we'll get a SIGCHLD for it, | |
1760 | * which we really should wait for to collect exit | |
1761 | * status and code */ | |
1762 | return s->main_pid > 0; | |
1763 | } | |
1764 | ||
1765 | /* We don't know the pid */ | |
1766 | return -EAGAIN; | |
1767 | } | |
1768 | ||
1769 | static int control_pid_good(Service *s) { | |
1770 | assert(s); | |
1771 | ||
1772 | return s->control_pid > 0; | |
1773 | } | |
1774 | ||
1775 | static int cgroup_good(Service *s) { | |
1776 | int r; | |
1777 | ||
1778 | assert(s); | |
1779 | ||
1780 | if ((r = cgroup_bonding_is_empty_list(s->meta.cgroup_bondings)) < 0) | |
1781 | return r; | |
1782 | ||
1783 | return !r; | |
1784 | } | |
1785 | ||
1786 | static void service_enter_dead(Service *s, bool success, bool allow_restart) { | |
1787 | int r; | |
1788 | assert(s); | |
1789 | ||
1790 | if (!success) | |
1791 | s->failure = true; | |
1792 | ||
1793 | if (allow_restart && | |
1794 | !s->forbid_restart && | |
1795 | (s->restart == SERVICE_RESTART_ALWAYS || | |
1796 | (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure) || | |
1797 | (s->restart == SERVICE_RESTART_ON_FAILURE && s->failure) || | |
1798 | (s->restart == SERVICE_RESTART_ON_ABORT && s->failure && | |
1799 | (s->main_exec_status.code == CLD_KILLED || | |
1800 | s->main_exec_status.code == CLD_DUMPED)))) { | |
1801 | ||
1802 | if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0) | |
1803 | goto fail; | |
1804 | ||
1805 | service_set_state(s, SERVICE_AUTO_RESTART); | |
1806 | } else | |
1807 | service_set_state(s, s->failure ? SERVICE_FAILED : SERVICE_DEAD); | |
1808 | ||
1809 | s->forbid_restart = false; | |
1810 | ||
1811 | return; | |
1812 | ||
1813 | fail: | |
1814 | log_warning("%s failed to run install restart timer: %s", s->meta.id, strerror(-r)); | |
1815 | service_enter_dead(s, false, false); | |
1816 | } | |
1817 | ||
1818 | static void service_enter_signal(Service *s, ServiceState state, bool success); | |
1819 | ||
1820 | static void service_enter_stop_post(Service *s, bool success) { | |
1821 | int r; | |
1822 | assert(s); | |
1823 | ||
1824 | if (!success) | |
1825 | s->failure = true; | |
1826 | ||
1827 | service_unwatch_control_pid(s); | |
1828 | ||
1829 | if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) { | |
1830 | s->control_command_id = SERVICE_EXEC_STOP_POST; | |
1831 | ||
1832 | if ((r = service_spawn(s, | |
1833 | s->control_command, | |
1834 | true, | |
1835 | false, | |
1836 | !s->permissions_start_only, | |
1837 | !s->root_directory_start_only, | |
1838 | true, | |
1839 | false, | |
1840 | &s->control_pid)) < 0) | |
1841 | goto fail; | |
1842 | ||
1843 | ||
1844 | service_set_state(s, SERVICE_STOP_POST); | |
1845 | } else | |
1846 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, true); | |
1847 | ||
1848 | return; | |
1849 | ||
1850 | fail: | |
1851 | log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r)); | |
1852 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); | |
1853 | } | |
1854 | ||
1855 | static void service_enter_signal(Service *s, ServiceState state, bool success) { | |
1856 | int r; | |
1857 | Set *pid_set = NULL; | |
1858 | bool wait_for_exit = false; | |
1859 | ||
1860 | assert(s); | |
1861 | ||
1862 | if (!success) | |
1863 | s->failure = true; | |
1864 | ||
1865 | if (s->exec_context.kill_mode != KILL_NONE) { | |
1866 | int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL; | |
1867 | ||
1868 | if (s->main_pid > 0) { | |
1869 | if (kill_and_sigcont(s->main_pid, sig) < 0 && errno != ESRCH) | |
1870 | log_warning("Failed to kill main process %li: %m", (long) s->main_pid); | |
1871 | else | |
1872 | wait_for_exit = !s->main_pid_alien; | |
1873 | } | |
1874 | ||
1875 | if (s->control_pid > 0) { | |
1876 | if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH) | |
1877 | log_warning("Failed to kill control process %li: %m", (long) s->control_pid); | |
1878 | else | |
1879 | wait_for_exit = true; | |
1880 | } | |
1881 | ||
1882 | if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) { | |
1883 | ||
1884 | if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) { | |
1885 | r = -ENOMEM; | |
1886 | goto fail; | |
1887 | } | |
1888 | ||
1889 | /* Exclude the main/control pids from being killed via the cgroup */ | |
1890 | if (s->main_pid > 0) | |
1891 | if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0) | |
1892 | goto fail; | |
1893 | ||
1894 | if (s->control_pid > 0) | |
1895 | if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) | |
1896 | goto fail; | |
1897 | ||
1898 | if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig, true, pid_set)) < 0) { | |
1899 | if (r != -EAGAIN && r != -ESRCH && r != -ENOENT) | |
1900 | log_warning("Failed to kill control group: %s", strerror(-r)); | |
1901 | } else if (r > 0) | |
1902 | wait_for_exit = true; | |
1903 | ||
1904 | set_free(pid_set); | |
1905 | pid_set = NULL; | |
1906 | } | |
1907 | } | |
1908 | ||
1909 | if (wait_for_exit) { | |
1910 | if (s->timeout_usec > 0) | |
1911 | if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) | |
1912 | goto fail; | |
1913 | ||
1914 | service_set_state(s, state); | |
1915 | } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL) | |
1916 | service_enter_stop_post(s, true); | |
1917 | else | |
1918 | service_enter_dead(s, true, true); | |
1919 | ||
1920 | return; | |
1921 | ||
1922 | fail: | |
1923 | log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r)); | |
1924 | ||
1925 | if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL) | |
1926 | service_enter_stop_post(s, false); | |
1927 | else | |
1928 | service_enter_dead(s, false, true); | |
1929 | ||
1930 | if (pid_set) | |
1931 | set_free(pid_set); | |
1932 | } | |
1933 | ||
1934 | static void service_enter_stop(Service *s, bool success) { | |
1935 | int r; | |
1936 | ||
1937 | assert(s); | |
1938 | ||
1939 | if (!success) | |
1940 | s->failure = true; | |
1941 | ||
1942 | service_unwatch_control_pid(s); | |
1943 | ||
1944 | if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) { | |
1945 | s->control_command_id = SERVICE_EXEC_STOP; | |
1946 | ||
1947 | if ((r = service_spawn(s, | |
1948 | s->control_command, | |
1949 | true, | |
1950 | false, | |
1951 | !s->permissions_start_only, | |
1952 | !s->root_directory_start_only, | |
1953 | false, | |
1954 | false, | |
1955 | &s->control_pid)) < 0) | |
1956 | goto fail; | |
1957 | ||
1958 | service_set_state(s, SERVICE_STOP); | |
1959 | } else | |
1960 | service_enter_signal(s, SERVICE_STOP_SIGTERM, true); | |
1961 | ||
1962 | return; | |
1963 | ||
1964 | fail: | |
1965 | log_warning("%s failed to run 'stop' task: %s", s->meta.id, strerror(-r)); | |
1966 | service_enter_signal(s, SERVICE_STOP_SIGTERM, false); | |
1967 | } | |
1968 | ||
1969 | static void service_enter_running(Service *s, bool success) { | |
1970 | int main_pid_ok, cgroup_ok; | |
1971 | assert(s); | |
1972 | ||
1973 | if (!success) | |
1974 | s->failure = true; | |
1975 | ||
1976 | main_pid_ok = main_pid_good(s); | |
1977 | cgroup_ok = cgroup_good(s); | |
1978 | ||
1979 | if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) && | |
1980 | (s->bus_name_good || s->type != SERVICE_DBUS)) | |
1981 | service_set_state(s, SERVICE_RUNNING); | |
1982 | else if (s->remain_after_exit) | |
1983 | service_set_state(s, SERVICE_EXITED); | |
1984 | else | |
1985 | service_enter_stop(s, true); | |
1986 | } | |
1987 | ||
1988 | static void service_enter_start_post(Service *s) { | |
1989 | int r; | |
1990 | assert(s); | |
1991 | ||
1992 | service_unwatch_control_pid(s); | |
1993 | ||
1994 | if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) { | |
1995 | s->control_command_id = SERVICE_EXEC_START_POST; | |
1996 | ||
1997 | if ((r = service_spawn(s, | |
1998 | s->control_command, | |
1999 | true, | |
2000 | false, | |
2001 | !s->permissions_start_only, | |
2002 | !s->root_directory_start_only, | |
2003 | false, | |
2004 | false, | |
2005 | &s->control_pid)) < 0) | |
2006 | goto fail; | |
2007 | ||
2008 | service_set_state(s, SERVICE_START_POST); | |
2009 | } else | |
2010 | service_enter_running(s, true); | |
2011 | ||
2012 | return; | |
2013 | ||
2014 | fail: | |
2015 | log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r)); | |
2016 | service_enter_stop(s, false); | |
2017 | } | |
2018 | ||
2019 | static void service_enter_start(Service *s) { | |
2020 | pid_t pid; | |
2021 | int r; | |
2022 | ExecCommand *c; | |
2023 | ||
2024 | assert(s); | |
2025 | ||
2026 | assert(s->exec_command[SERVICE_EXEC_START]); | |
2027 | assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT); | |
2028 | ||
2029 | if (s->type == SERVICE_FORKING) | |
2030 | service_unwatch_control_pid(s); | |
2031 | else | |
2032 | service_unwatch_main_pid(s); | |
2033 | ||
2034 | if (s->type == SERVICE_FORKING) { | |
2035 | s->control_command_id = SERVICE_EXEC_START; | |
2036 | c = s->control_command = s->exec_command[SERVICE_EXEC_START]; | |
2037 | ||
2038 | s->main_command = NULL; | |
2039 | } else { | |
2040 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
2041 | s->control_command = NULL; | |
2042 | ||
2043 | c = s->main_command = s->exec_command[SERVICE_EXEC_START]; | |
2044 | } | |
2045 | ||
2046 | if ((r = service_spawn(s, | |
2047 | c, | |
2048 | s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY, | |
2049 | true, | |
2050 | true, | |
2051 | true, | |
2052 | true, | |
2053 | s->notify_access != NOTIFY_NONE, | |
2054 | &pid)) < 0) | |
2055 | goto fail; | |
2056 | ||
2057 | if (s->type == SERVICE_SIMPLE) { | |
2058 | /* For simple services we immediately start | |
2059 | * the START_POST binaries. */ | |
2060 | ||
2061 | service_set_main_pid(s, pid); | |
2062 | service_enter_start_post(s); | |
2063 | ||
2064 | } else if (s->type == SERVICE_FORKING) { | |
2065 | ||
2066 | /* For forking services we wait until the start | |
2067 | * process exited. */ | |
2068 | ||
2069 | s->control_pid = pid; | |
2070 | service_set_state(s, SERVICE_START); | |
2071 | ||
2072 | } else if (s->type == SERVICE_ONESHOT || | |
2073 | s->type == SERVICE_DBUS || | |
2074 | s->type == SERVICE_NOTIFY) { | |
2075 | ||
2076 | /* For oneshot services we wait until the start | |
2077 | * process exited, too, but it is our main process. */ | |
2078 | ||
2079 | /* For D-Bus services we know the main pid right away, | |
2080 | * but wait for the bus name to appear on the | |
2081 | * bus. Notify services are similar. */ | |
2082 | ||
2083 | service_set_main_pid(s, pid); | |
2084 | service_set_state(s, SERVICE_START); | |
2085 | } else | |
2086 | assert_not_reached("Unknown service type"); | |
2087 | ||
2088 | return; | |
2089 | ||
2090 | fail: | |
2091 | log_warning("%s failed to run 'start' task: %s", s->meta.id, strerror(-r)); | |
2092 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); | |
2093 | } | |
2094 | ||
2095 | static void service_enter_start_pre(Service *s) { | |
2096 | int r; | |
2097 | ||
2098 | assert(s); | |
2099 | ||
2100 | service_unwatch_control_pid(s); | |
2101 | ||
2102 | if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) { | |
2103 | s->control_command_id = SERVICE_EXEC_START_PRE; | |
2104 | ||
2105 | if ((r = service_spawn(s, | |
2106 | s->control_command, | |
2107 | true, | |
2108 | false, | |
2109 | !s->permissions_start_only, | |
2110 | !s->root_directory_start_only, | |
2111 | true, | |
2112 | false, | |
2113 | &s->control_pid)) < 0) | |
2114 | goto fail; | |
2115 | ||
2116 | service_set_state(s, SERVICE_START_PRE); | |
2117 | } else | |
2118 | service_enter_start(s); | |
2119 | ||
2120 | return; | |
2121 | ||
2122 | fail: | |
2123 | log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r)); | |
2124 | service_enter_dead(s, false, true); | |
2125 | } | |
2126 | ||
2127 | static void service_enter_restart(Service *s) { | |
2128 | int r; | |
2129 | DBusError error; | |
2130 | ||
2131 | assert(s); | |
2132 | dbus_error_init(&error); | |
2133 | ||
2134 | if (s->meta.job) { | |
2135 | log_info("Job pending for unit, delaying automatic restart."); | |
2136 | ||
2137 | if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0) | |
2138 | goto fail; | |
2139 | } | |
2140 | ||
2141 | service_enter_dead(s, true, false); | |
2142 | ||
2143 | if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, &error, NULL)) < 0) | |
2144 | goto fail; | |
2145 | ||
2146 | log_debug("%s scheduled restart job.", s->meta.id); | |
2147 | return; | |
2148 | ||
2149 | fail: | |
2150 | log_warning("%s failed to schedule restart job: %s", s->meta.id, bus_error(&error, -r)); | |
2151 | service_enter_dead(s, false, false); | |
2152 | ||
2153 | dbus_error_free(&error); | |
2154 | } | |
2155 | ||
2156 | static void service_enter_reload(Service *s) { | |
2157 | int r; | |
2158 | ||
2159 | assert(s); | |
2160 | ||
2161 | service_unwatch_control_pid(s); | |
2162 | ||
2163 | if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) { | |
2164 | s->control_command_id = SERVICE_EXEC_RELOAD; | |
2165 | ||
2166 | if ((r = service_spawn(s, | |
2167 | s->control_command, | |
2168 | true, | |
2169 | false, | |
2170 | !s->permissions_start_only, | |
2171 | !s->root_directory_start_only, | |
2172 | false, | |
2173 | false, | |
2174 | &s->control_pid)) < 0) | |
2175 | goto fail; | |
2176 | ||
2177 | service_set_state(s, SERVICE_RELOAD); | |
2178 | } else | |
2179 | service_enter_running(s, true); | |
2180 | ||
2181 | return; | |
2182 | ||
2183 | fail: | |
2184 | log_warning("%s failed to run 'reload' task: %s", s->meta.id, strerror(-r)); | |
2185 | s->reload_failure = true; | |
2186 | service_enter_running(s, true); | |
2187 | } | |
2188 | ||
2189 | static void service_run_next_control(Service *s, bool success) { | |
2190 | int r; | |
2191 | ||
2192 | assert(s); | |
2193 | assert(s->control_command); | |
2194 | assert(s->control_command->command_next); | |
2195 | ||
2196 | if (!success) | |
2197 | s->failure = true; | |
2198 | ||
2199 | assert(s->control_command_id != SERVICE_EXEC_START); | |
2200 | ||
2201 | s->control_command = s->control_command->command_next; | |
2202 | service_unwatch_control_pid(s); | |
2203 | ||
2204 | if ((r = service_spawn(s, | |
2205 | s->control_command, | |
2206 | true, | |
2207 | false, | |
2208 | !s->permissions_start_only, | |
2209 | !s->root_directory_start_only, | |
2210 | s->control_command_id == SERVICE_EXEC_START_PRE || | |
2211 | s->control_command_id == SERVICE_EXEC_STOP_POST, | |
2212 | false, | |
2213 | &s->control_pid)) < 0) | |
2214 | goto fail; | |
2215 | ||
2216 | return; | |
2217 | ||
2218 | fail: | |
2219 | log_warning("%s failed to run next control task: %s", s->meta.id, strerror(-r)); | |
2220 | ||
2221 | if (s->state == SERVICE_START_PRE) | |
2222 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); | |
2223 | else if (s->state == SERVICE_STOP) | |
2224 | service_enter_signal(s, SERVICE_STOP_SIGTERM, false); | |
2225 | else if (s->state == SERVICE_STOP_POST) | |
2226 | service_enter_dead(s, false, true); | |
2227 | else if (s->state == SERVICE_RELOAD) { | |
2228 | s->reload_failure = true; | |
2229 | service_enter_running(s, true); | |
2230 | } else | |
2231 | service_enter_stop(s, false); | |
2232 | } | |
2233 | ||
2234 | static void service_run_next_main(Service *s, bool success) { | |
2235 | pid_t pid; | |
2236 | int r; | |
2237 | ||
2238 | assert(s); | |
2239 | assert(s->main_command); | |
2240 | assert(s->main_command->command_next); | |
2241 | assert(s->type == SERVICE_ONESHOT); | |
2242 | ||
2243 | if (!success) | |
2244 | s->failure = true; | |
2245 | ||
2246 | s->main_command = s->main_command->command_next; | |
2247 | service_unwatch_main_pid(s); | |
2248 | ||
2249 | if ((r = service_spawn(s, | |
2250 | s->main_command, | |
2251 | false, | |
2252 | true, | |
2253 | true, | |
2254 | true, | |
2255 | true, | |
2256 | s->notify_access != NOTIFY_NONE, | |
2257 | &pid)) < 0) | |
2258 | goto fail; | |
2259 | ||
2260 | service_set_main_pid(s, pid); | |
2261 | ||
2262 | return; | |
2263 | ||
2264 | fail: | |
2265 | log_warning("%s failed to run next main task: %s", s->meta.id, strerror(-r)); | |
2266 | service_enter_stop(s, false); | |
2267 | } | |
2268 | ||
2269 | static int service_start(Unit *u) { | |
2270 | Service *s = SERVICE(u); | |
2271 | ||
2272 | assert(s); | |
2273 | ||
2274 | /* We cannot fulfill this request right now, try again later | |
2275 | * please! */ | |
2276 | if (s->state == SERVICE_STOP || | |
2277 | s->state == SERVICE_STOP_SIGTERM || | |
2278 | s->state == SERVICE_STOP_SIGKILL || | |
2279 | s->state == SERVICE_STOP_POST || | |
2280 | s->state == SERVICE_FINAL_SIGTERM || | |
2281 | s->state == SERVICE_FINAL_SIGKILL) | |
2282 | return -EAGAIN; | |
2283 | ||
2284 | /* Already on it! */ | |
2285 | if (s->state == SERVICE_START_PRE || | |
2286 | s->state == SERVICE_START || | |
2287 | s->state == SERVICE_START_POST) | |
2288 | return 0; | |
2289 | ||
2290 | assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED || s->state == SERVICE_AUTO_RESTART); | |
2291 | ||
2292 | /* Make sure we don't enter a busy loop of some kind. */ | |
2293 | if (!ratelimit_test(&s->ratelimit)) { | |
2294 | log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id); | |
2295 | return -ECANCELED; | |
2296 | } | |
2297 | ||
2298 | s->failure = false; | |
2299 | s->main_pid_known = false; | |
2300 | s->main_pid_alien = false; | |
2301 | s->forbid_restart = false; | |
2302 | ||
2303 | service_enter_start_pre(s); | |
2304 | return 0; | |
2305 | } | |
2306 | ||
2307 | static int service_stop(Unit *u) { | |
2308 | Service *s = SERVICE(u); | |
2309 | ||
2310 | assert(s); | |
2311 | ||
2312 | /* This is a user request, so don't do restarts on this | |
2313 | * shutdown. */ | |
2314 | s->forbid_restart = true; | |
2315 | ||
2316 | /* Already on it */ | |
2317 | if (s->state == SERVICE_STOP || | |
2318 | s->state == SERVICE_STOP_SIGTERM || | |
2319 | s->state == SERVICE_STOP_SIGKILL || | |
2320 | s->state == SERVICE_STOP_POST || | |
2321 | s->state == SERVICE_FINAL_SIGTERM || | |
2322 | s->state == SERVICE_FINAL_SIGKILL) | |
2323 | return 0; | |
2324 | ||
2325 | /* Don't allow a restart */ | |
2326 | if (s->state == SERVICE_AUTO_RESTART) { | |
2327 | service_set_state(s, SERVICE_DEAD); | |
2328 | return 0; | |
2329 | } | |
2330 | ||
2331 | /* If there's already something running we go directly into | |
2332 | * kill mode. */ | |
2333 | if (s->state == SERVICE_START_PRE || | |
2334 | s->state == SERVICE_START || | |
2335 | s->state == SERVICE_START_POST || | |
2336 | s->state == SERVICE_RELOAD) { | |
2337 | service_enter_signal(s, SERVICE_STOP_SIGTERM, true); | |
2338 | return 0; | |
2339 | } | |
2340 | ||
2341 | assert(s->state == SERVICE_RUNNING || | |
2342 | s->state == SERVICE_EXITED); | |
2343 | ||
2344 | service_enter_stop(s, true); | |
2345 | return 0; | |
2346 | } | |
2347 | ||
2348 | static int service_reload(Unit *u) { | |
2349 | Service *s = SERVICE(u); | |
2350 | ||
2351 | assert(s); | |
2352 | ||
2353 | assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED); | |
2354 | ||
2355 | service_enter_reload(s); | |
2356 | return 0; | |
2357 | } | |
2358 | ||
2359 | static bool service_can_reload(Unit *u) { | |
2360 | Service *s = SERVICE(u); | |
2361 | ||
2362 | assert(s); | |
2363 | ||
2364 | return !!s->exec_command[SERVICE_EXEC_RELOAD]; | |
2365 | } | |
2366 | ||
2367 | static int service_serialize(Unit *u, FILE *f, FDSet *fds) { | |
2368 | Service *s = SERVICE(u); | |
2369 | ||
2370 | assert(u); | |
2371 | assert(f); | |
2372 | assert(fds); | |
2373 | ||
2374 | unit_serialize_item(u, f, "state", service_state_to_string(s->state)); | |
2375 | unit_serialize_item(u, f, "failure", yes_no(s->failure)); | |
2376 | ||
2377 | if (s->control_pid > 0) | |
2378 | unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid); | |
2379 | ||
2380 | if (s->main_pid_known && s->main_pid > 0) | |
2381 | unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid); | |
2382 | ||
2383 | unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known)); | |
2384 | ||
2385 | if (s->status_text) | |
2386 | unit_serialize_item(u, f, "status-text", s->status_text); | |
2387 | ||
2388 | /* There's a minor uncleanliness here: if there are multiple | |
2389 | * commands attached here, we will start from the first one | |
2390 | * again */ | |
2391 | if (s->control_command_id >= 0) | |
2392 | unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id)); | |
2393 | ||
2394 | if (s->socket_fd >= 0) { | |
2395 | int copy; | |
2396 | ||
2397 | if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0) | |
2398 | return copy; | |
2399 | ||
2400 | unit_serialize_item_format(u, f, "socket-fd", "%i", copy); | |
2401 | } | |
2402 | ||
2403 | if (s->main_exec_status.pid > 0) { | |
2404 | unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid); | |
2405 | dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp); | |
2406 | dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp); | |
2407 | ||
2408 | if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { | |
2409 | unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code); | |
2410 | unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status); | |
2411 | } | |
2412 | } | |
2413 | ||
2414 | return 0; | |
2415 | } | |
2416 | ||
2417 | static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
2418 | Service *s = SERVICE(u); | |
2419 | ||
2420 | assert(u); | |
2421 | assert(key); | |
2422 | assert(value); | |
2423 | assert(fds); | |
2424 | ||
2425 | if (streq(key, "state")) { | |
2426 | ServiceState state; | |
2427 | ||
2428 | if ((state = service_state_from_string(value)) < 0) | |
2429 | log_debug("Failed to parse state value %s", value); | |
2430 | else | |
2431 | s->deserialized_state = state; | |
2432 | } else if (streq(key, "failure")) { | |
2433 | int b; | |
2434 | ||
2435 | if ((b = parse_boolean(value)) < 0) | |
2436 | log_debug("Failed to parse failure value %s", value); | |
2437 | else | |
2438 | s->failure = b || s->failure; | |
2439 | } else if (streq(key, "control-pid")) { | |
2440 | pid_t pid; | |
2441 | ||
2442 | if (parse_pid(value, &pid) < 0) | |
2443 | log_debug("Failed to parse control-pid value %s", value); | |
2444 | else | |
2445 | s->control_pid = pid; | |
2446 | } else if (streq(key, "main-pid")) { | |
2447 | pid_t pid; | |
2448 | ||
2449 | if (parse_pid(value, &pid) < 0) | |
2450 | log_debug("Failed to parse main-pid value %s", value); | |
2451 | else | |
2452 | service_set_main_pid(s, (pid_t) pid); | |
2453 | } else if (streq(key, "main-pid-known")) { | |
2454 | int b; | |
2455 | ||
2456 | if ((b = parse_boolean(value)) < 0) | |
2457 | log_debug("Failed to parse main-pid-known value %s", value); | |
2458 | else | |
2459 | s->main_pid_known = b; | |
2460 | } else if (streq(key, "status-text")) { | |
2461 | char *t; | |
2462 | ||
2463 | if ((t = strdup(value))) { | |
2464 | free(s->status_text); | |
2465 | s->status_text = t; | |
2466 | } | |
2467 | ||
2468 | } else if (streq(key, "control-command")) { | |
2469 | ServiceExecCommand id; | |
2470 | ||
2471 | if ((id = service_exec_command_from_string(value)) < 0) | |
2472 | log_debug("Failed to parse exec-command value %s", value); | |
2473 | else { | |
2474 | s->control_command_id = id; | |
2475 | s->control_command = s->exec_command[id]; | |
2476 | } | |
2477 | } else if (streq(key, "socket-fd")) { | |
2478 | int fd; | |
2479 | ||
2480 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2481 | log_debug("Failed to parse socket-fd value %s", value); | |
2482 | else { | |
2483 | ||
2484 | if (s->socket_fd >= 0) | |
2485 | close_nointr_nofail(s->socket_fd); | |
2486 | s->socket_fd = fdset_remove(fds, fd); | |
2487 | } | |
2488 | } else if (streq(key, "main-exec-status-pid")) { | |
2489 | pid_t pid; | |
2490 | ||
2491 | if (parse_pid(value, &pid) < 0) | |
2492 | log_debug("Failed to parse main-exec-status-pid value %s", value); | |
2493 | else | |
2494 | s->main_exec_status.pid = pid; | |
2495 | } else if (streq(key, "main-exec-status-code")) { | |
2496 | int i; | |
2497 | ||
2498 | if (safe_atoi(value, &i) < 0) | |
2499 | log_debug("Failed to parse main-exec-status-code value %s", value); | |
2500 | else | |
2501 | s->main_exec_status.code = i; | |
2502 | } else if (streq(key, "main-exec-status-status")) { | |
2503 | int i; | |
2504 | ||
2505 | if (safe_atoi(value, &i) < 0) | |
2506 | log_debug("Failed to parse main-exec-status-status value %s", value); | |
2507 | else | |
2508 | s->main_exec_status.status = i; | |
2509 | } else if (streq(key, "main-exec-status-start")) | |
2510 | dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp); | |
2511 | else if (streq(key, "main-exec-status-exit")) | |
2512 | dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp); | |
2513 | else | |
2514 | log_debug("Unknown serialization key '%s'", key); | |
2515 | ||
2516 | return 0; | |
2517 | } | |
2518 | ||
2519 | static UnitActiveState service_active_state(Unit *u) { | |
2520 | assert(u); | |
2521 | ||
2522 | return state_translation_table[SERVICE(u)->state]; | |
2523 | } | |
2524 | ||
2525 | static const char *service_sub_state_to_string(Unit *u) { | |
2526 | assert(u); | |
2527 | ||
2528 | return service_state_to_string(SERVICE(u)->state); | |
2529 | } | |
2530 | ||
2531 | static bool service_check_gc(Unit *u) { | |
2532 | Service *s = SERVICE(u); | |
2533 | ||
2534 | assert(s); | |
2535 | ||
2536 | /* Never clean up services that still have a process around, | |
2537 | * even if the service is formally dead. */ | |
2538 | if (cgroup_good(s) > 0 || | |
2539 | main_pid_good(s) > 0 || | |
2540 | control_pid_good(s) > 0) | |
2541 | return true; | |
2542 | ||
2543 | #ifdef HAVE_SYSV_COMPAT | |
2544 | if (s->sysv_path) | |
2545 | return true; | |
2546 | #endif | |
2547 | ||
2548 | return false; | |
2549 | } | |
2550 | ||
2551 | static bool service_check_snapshot(Unit *u) { | |
2552 | Service *s = SERVICE(u); | |
2553 | ||
2554 | assert(s); | |
2555 | ||
2556 | return !s->got_socket_fd; | |
2557 | } | |
2558 | ||
2559 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { | |
2560 | Service *s = SERVICE(u); | |
2561 | bool success; | |
2562 | ||
2563 | assert(s); | |
2564 | assert(pid >= 0); | |
2565 | ||
2566 | if (!s->meta.fragment_path) | |
2567 | success = is_clean_exit_lsb(code, status); | |
2568 | else | |
2569 | success = is_clean_exit(code, status); | |
2570 | ||
2571 | if (s->main_pid == pid) { | |
2572 | ||
2573 | s->main_pid = 0; | |
2574 | exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status); | |
2575 | ||
2576 | /* If this is not a forking service than the main | |
2577 | * process got started and hence we copy the exit | |
2578 | * status so that it is recorded both as main and as | |
2579 | * control process exit status */ | |
2580 | if (s->main_command) { | |
2581 | s->main_command->exec_status = s->main_exec_status; | |
2582 | ||
2583 | if (s->main_command->ignore) | |
2584 | success = true; | |
2585 | } | |
2586 | ||
2587 | log_full(success ? LOG_DEBUG : LOG_NOTICE, | |
2588 | "%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status); | |
2589 | s->failure = s->failure || !success; | |
2590 | ||
2591 | if (s->main_command && | |
2592 | s->main_command->command_next && | |
2593 | success) { | |
2594 | ||
2595 | /* There is another command to * | |
2596 | * execute, so let's do that. */ | |
2597 | ||
2598 | log_debug("%s running next main command for state %s", u->meta.id, service_state_to_string(s->state)); | |
2599 | service_run_next_main(s, success); | |
2600 | ||
2601 | } else { | |
2602 | ||
2603 | /* The service exited, so the service is officially | |
2604 | * gone. */ | |
2605 | s->main_command = NULL; | |
2606 | ||
2607 | switch (s->state) { | |
2608 | ||
2609 | case SERVICE_START_POST: | |
2610 | case SERVICE_RELOAD: | |
2611 | case SERVICE_STOP: | |
2612 | /* Need to wait until the operation is | |
2613 | * done */ | |
2614 | break; | |
2615 | ||
2616 | case SERVICE_START: | |
2617 | if (s->type == SERVICE_ONESHOT) { | |
2618 | /* This was our main goal, so let's go on */ | |
2619 | if (success) | |
2620 | service_enter_start_post(s); | |
2621 | else | |
2622 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); | |
2623 | break; | |
2624 | } else { | |
2625 | assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY); | |
2626 | ||
2627 | /* Fall through */ | |
2628 | } | |
2629 | ||
2630 | case SERVICE_RUNNING: | |
2631 | service_enter_running(s, success); | |
2632 | break; | |
2633 | ||
2634 | case SERVICE_STOP_SIGTERM: | |
2635 | case SERVICE_STOP_SIGKILL: | |
2636 | ||
2637 | if (!control_pid_good(s)) | |
2638 | service_enter_stop_post(s, success); | |
2639 | ||
2640 | /* If there is still a control process, wait for that first */ | |
2641 | break; | |
2642 | ||
2643 | default: | |
2644 | assert_not_reached("Uh, main process died at wrong time."); | |
2645 | } | |
2646 | } | |
2647 | ||
2648 | } else if (s->control_pid == pid) { | |
2649 | ||
2650 | s->control_pid = 0; | |
2651 | ||
2652 | if (s->control_command) { | |
2653 | exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status); | |
2654 | ||
2655 | if (s->control_command->ignore) | |
2656 | success = true; | |
2657 | } | |
2658 | ||
2659 | log_full(success ? LOG_DEBUG : LOG_NOTICE, | |
2660 | "%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status); | |
2661 | s->failure = s->failure || !success; | |
2662 | ||
2663 | if (s->control_command && | |
2664 | s->control_command->command_next && | |
2665 | success) { | |
2666 | ||
2667 | /* There is another command to * | |
2668 | * execute, so let's do that. */ | |
2669 | ||
2670 | log_debug("%s running next control command for state %s", u->meta.id, service_state_to_string(s->state)); | |
2671 | service_run_next_control(s, success); | |
2672 | ||
2673 | } else { | |
2674 | /* No further commands for this step, so let's | |
2675 | * figure out what to do next */ | |
2676 | ||
2677 | s->control_command = NULL; | |
2678 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
2679 | ||
2680 | log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state)); | |
2681 | ||
2682 | switch (s->state) { | |
2683 | ||
2684 | case SERVICE_START_PRE: | |
2685 | if (success) | |
2686 | service_enter_start(s); | |
2687 | else | |
2688 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); | |
2689 | break; | |
2690 | ||
2691 | case SERVICE_START: | |
2692 | assert(s->type == SERVICE_FORKING); | |
2693 | ||
2694 | /* Let's try to load the pid | |
2695 | * file here if we can. We | |
2696 | * ignore the return value, | |
2697 | * since the PID file might | |
2698 | * actually be created by a | |
2699 | * START_POST script */ | |
2700 | ||
2701 | if (success) { | |
2702 | service_load_pid_file(s); | |
2703 | service_search_main_pid(s); | |
2704 | ||
2705 | service_enter_start_post(s); | |
2706 | } else | |
2707 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); | |
2708 | ||
2709 | break; | |
2710 | ||
2711 | case SERVICE_START_POST: | |
2712 | if (success) { | |
2713 | service_load_pid_file(s); | |
2714 | service_search_main_pid(s); | |
2715 | } | |
2716 | ||
2717 | s->reload_failure = !success; | |
2718 | service_enter_running(s, true); | |
2719 | break; | |
2720 | ||
2721 | case SERVICE_RELOAD: | |
2722 | if (success) { | |
2723 | service_load_pid_file(s); | |
2724 | service_search_main_pid(s); | |
2725 | } | |
2726 | ||
2727 | s->reload_failure = !success; | |
2728 | service_enter_running(s, true); | |
2729 | break; | |
2730 | ||
2731 | case SERVICE_STOP: | |
2732 | service_enter_signal(s, SERVICE_STOP_SIGTERM, success); | |
2733 | break; | |
2734 | ||
2735 | case SERVICE_STOP_SIGTERM: | |
2736 | case SERVICE_STOP_SIGKILL: | |
2737 | if (main_pid_good(s) <= 0) | |
2738 | service_enter_stop_post(s, success); | |
2739 | ||
2740 | /* If there is still a service | |
2741 | * process around, wait until | |
2742 | * that one quit, too */ | |
2743 | break; | |
2744 | ||
2745 | case SERVICE_STOP_POST: | |
2746 | case SERVICE_FINAL_SIGTERM: | |
2747 | case SERVICE_FINAL_SIGKILL: | |
2748 | service_enter_dead(s, success, true); | |
2749 | break; | |
2750 | ||
2751 | default: | |
2752 | assert_not_reached("Uh, control process died at wrong time."); | |
2753 | } | |
2754 | } | |
2755 | } | |
2756 | ||
2757 | /* Notify clients about changed exit status */ | |
2758 | unit_add_to_dbus_queue(u); | |
2759 | } | |
2760 | ||
2761 | static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) { | |
2762 | Service *s = SERVICE(u); | |
2763 | ||
2764 | assert(s); | |
2765 | assert(elapsed == 1); | |
2766 | ||
2767 | assert(w == &s->timer_watch); | |
2768 | ||
2769 | switch (s->state) { | |
2770 | ||
2771 | case SERVICE_START_PRE: | |
2772 | case SERVICE_START: | |
2773 | log_warning("%s operation timed out. Terminating.", u->meta.id); | |
2774 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); | |
2775 | break; | |
2776 | ||
2777 | case SERVICE_START_POST: | |
2778 | log_warning("%s operation timed out. Stopping.", u->meta.id); | |
2779 | service_enter_stop(s, false); | |
2780 | break; | |
2781 | ||
2782 | case SERVICE_RELOAD: | |
2783 | log_warning("%s operation timed out. Stopping.", u->meta.id); | |
2784 | s->reload_failure = true; | |
2785 | service_enter_running(s, true); | |
2786 | break; | |
2787 | ||
2788 | case SERVICE_STOP: | |
2789 | log_warning("%s stopping timed out. Terminating.", u->meta.id); | |
2790 | service_enter_signal(s, SERVICE_STOP_SIGTERM, false); | |
2791 | break; | |
2792 | ||
2793 | case SERVICE_STOP_SIGTERM: | |
2794 | if (s->exec_context.send_sigkill) { | |
2795 | log_warning("%s stopping timed out. Killing.", u->meta.id); | |
2796 | service_enter_signal(s, SERVICE_STOP_SIGKILL, false); | |
2797 | } else { | |
2798 | log_warning("%s stopping timed out. Skipping SIGKILL.", u->meta.id); | |
2799 | service_enter_stop_post(s, false); | |
2800 | } | |
2801 | ||
2802 | break; | |
2803 | ||
2804 | case SERVICE_STOP_SIGKILL: | |
2805 | /* Uh, we sent a SIGKILL and it is still not gone? | |
2806 | * Must be something we cannot kill, so let's just be | |
2807 | * weirded out and continue */ | |
2808 | ||
2809 | log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id); | |
2810 | service_enter_stop_post(s, false); | |
2811 | break; | |
2812 | ||
2813 | case SERVICE_STOP_POST: | |
2814 | log_warning("%s stopping timed out (2). Terminating.", u->meta.id); | |
2815 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); | |
2816 | break; | |
2817 | ||
2818 | case SERVICE_FINAL_SIGTERM: | |
2819 | if (s->exec_context.send_sigkill) { | |
2820 | log_warning("%s stopping timed out (2). Killing.", u->meta.id); | |
2821 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, false); | |
2822 | } else { | |
2823 | log_warning("%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.", u->meta.id); | |
2824 | service_enter_dead(s, false, true); | |
2825 | } | |
2826 | ||
2827 | break; | |
2828 | ||
2829 | case SERVICE_FINAL_SIGKILL: | |
2830 | log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->meta.id); | |
2831 | service_enter_dead(s, false, true); | |
2832 | break; | |
2833 | ||
2834 | case SERVICE_AUTO_RESTART: | |
2835 | log_info("%s holdoff time over, scheduling restart.", u->meta.id); | |
2836 | service_enter_restart(s); | |
2837 | break; | |
2838 | ||
2839 | default: | |
2840 | assert_not_reached("Timeout at wrong time."); | |
2841 | } | |
2842 | } | |
2843 | ||
2844 | static void service_cgroup_notify_event(Unit *u) { | |
2845 | Service *s = SERVICE(u); | |
2846 | ||
2847 | assert(u); | |
2848 | ||
2849 | log_debug("%s: cgroup is empty", u->meta.id); | |
2850 | ||
2851 | switch (s->state) { | |
2852 | ||
2853 | /* Waiting for SIGCHLD is usually more interesting, | |
2854 | * because it includes return codes/signals. Which is | |
2855 | * why we ignore the cgroup events for most cases, | |
2856 | * except when we don't know pid which to expect the | |
2857 | * SIGCHLD for. */ | |
2858 | ||
2859 | case SERVICE_RUNNING: | |
2860 | service_enter_running(s, true); | |
2861 | break; | |
2862 | ||
2863 | case SERVICE_STOP_SIGTERM: | |
2864 | case SERVICE_STOP_SIGKILL: | |
2865 | ||
2866 | if (main_pid_good(s) <= 0 && !control_pid_good(s)) | |
2867 | service_enter_stop_post(s, true); | |
2868 | ||
2869 | break; | |
2870 | ||
2871 | case SERVICE_FINAL_SIGTERM: | |
2872 | case SERVICE_FINAL_SIGKILL: | |
2873 | if (main_pid_good(s) <= 0 && !control_pid_good(s)) | |
2874 | service_enter_dead(s, true, true); | |
2875 | ||
2876 | break; | |
2877 | ||
2878 | default: | |
2879 | ; | |
2880 | } | |
2881 | } | |
2882 | ||
2883 | static void service_notify_message(Unit *u, pid_t pid, char **tags) { | |
2884 | Service *s = SERVICE(u); | |
2885 | const char *e; | |
2886 | ||
2887 | assert(u); | |
2888 | ||
2889 | if (s->notify_access == NOTIFY_NONE) { | |
2890 | log_warning("%s: Got notification message from PID %lu, but reception is disabled.", | |
2891 | u->meta.id, (unsigned long) pid); | |
2892 | return; | |
2893 | } | |
2894 | ||
2895 | if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) { | |
2896 | log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu", | |
2897 | u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid); | |
2898 | return; | |
2899 | } | |
2900 | ||
2901 | log_debug("%s: Got message", u->meta.id); | |
2902 | ||
2903 | /* Interpret MAINPID= */ | |
2904 | if ((e = strv_find_prefix(tags, "MAINPID=")) && | |
2905 | (s->state == SERVICE_START || | |
2906 | s->state == SERVICE_START_POST || | |
2907 | s->state == SERVICE_RUNNING || | |
2908 | s->state == SERVICE_RELOAD)) { | |
2909 | ||
2910 | if (parse_pid(e + 8, &pid) < 0) | |
2911 | log_warning("Failed to parse notification message %s", e); | |
2912 | else { | |
2913 | log_debug("%s: got %s", u->meta.id, e); | |
2914 | service_set_main_pid(s, pid); | |
2915 | } | |
2916 | } | |
2917 | ||
2918 | /* Interpret READY= */ | |
2919 | if (s->type == SERVICE_NOTIFY && | |
2920 | s->state == SERVICE_START && | |
2921 | strv_find(tags, "READY=1")) { | |
2922 | log_debug("%s: got READY=1", u->meta.id); | |
2923 | ||
2924 | service_enter_start_post(s); | |
2925 | } | |
2926 | ||
2927 | /* Interpret STATUS= */ | |
2928 | if ((e = strv_find_prefix(tags, "STATUS="))) { | |
2929 | char *t; | |
2930 | ||
2931 | if (e[7]) { | |
2932 | if (!(t = strdup(e+7))) { | |
2933 | log_error("Failed to allocate string."); | |
2934 | return; | |
2935 | } | |
2936 | ||
2937 | log_debug("%s: got %s", u->meta.id, e); | |
2938 | ||
2939 | free(s->status_text); | |
2940 | s->status_text = t; | |
2941 | } else { | |
2942 | free(s->status_text); | |
2943 | s->status_text = NULL; | |
2944 | } | |
2945 | ||
2946 | } | |
2947 | ||
2948 | /* Notify clients about changed status or main pid */ | |
2949 | unit_add_to_dbus_queue(u); | |
2950 | } | |
2951 | ||
2952 | #ifdef HAVE_SYSV_COMPAT | |
2953 | static int service_enumerate(Manager *m) { | |
2954 | char **p; | |
2955 | unsigned i; | |
2956 | DIR *d = NULL; | |
2957 | char *path = NULL, *fpath = NULL, *name = NULL; | |
2958 | Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL; | |
2959 | Unit *service; | |
2960 | Iterator j; | |
2961 | int r; | |
2962 | ||
2963 | assert(m); | |
2964 | ||
2965 | zero(runlevel_services); | |
2966 | ||
2967 | STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path) | |
2968 | for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) { | |
2969 | struct dirent *de; | |
2970 | ||
2971 | free(path); | |
2972 | path = NULL; | |
2973 | if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) { | |
2974 | r = -ENOMEM; | |
2975 | goto finish; | |
2976 | } | |
2977 | ||
2978 | if (d) | |
2979 | closedir(d); | |
2980 | ||
2981 | if (!(d = opendir(path))) { | |
2982 | if (errno != ENOENT) | |
2983 | log_warning("opendir() failed on %s: %s", path, strerror(errno)); | |
2984 | ||
2985 | continue; | |
2986 | } | |
2987 | ||
2988 | while ((de = readdir(d))) { | |
2989 | int a, b; | |
2990 | ||
2991 | if (ignore_file(de->d_name)) | |
2992 | continue; | |
2993 | ||
2994 | if (de->d_name[0] != 'S' && de->d_name[0] != 'K') | |
2995 | continue; | |
2996 | ||
2997 | if (strlen(de->d_name) < 4) | |
2998 | continue; | |
2999 | ||
3000 | a = undecchar(de->d_name[1]); | |
3001 | b = undecchar(de->d_name[2]); | |
3002 | ||
3003 | if (a < 0 || b < 0) | |
3004 | continue; | |
3005 | ||
3006 | free(fpath); | |
3007 | fpath = NULL; | |
3008 | if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) { | |
3009 | r = -ENOMEM; | |
3010 | goto finish; | |
3011 | } | |
3012 | ||
3013 | if (access(fpath, X_OK) < 0) { | |
3014 | ||
3015 | if (errno != ENOENT) | |
3016 | log_warning("access() failed on %s: %s", fpath, strerror(errno)); | |
3017 | ||
3018 | continue; | |
3019 | } | |
3020 | ||
3021 | free(name); | |
3022 | if (!(name = sysv_translate_name(de->d_name + 3))) { | |
3023 | r = -ENOMEM; | |
3024 | goto finish; | |
3025 | } | |
3026 | ||
3027 | if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) { | |
3028 | log_warning("Failed to prepare unit %s: %s", name, strerror(-r)); | |
3029 | continue; | |
3030 | } | |
3031 | ||
3032 | if (de->d_name[0] == 'S') { | |
3033 | ||
3034 | if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) { | |
3035 | SERVICE(service)->sysv_start_priority_from_rcnd = | |
3036 | MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd); | |
3037 | ||
3038 | SERVICE(service)->sysv_enabled = true; | |
3039 | } | |
3040 | ||
3041 | if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0) | |
3042 | goto finish; | |
3043 | ||
3044 | if ((r = set_put(runlevel_services[i], service)) < 0) | |
3045 | goto finish; | |
3046 | ||
3047 | } else if (de->d_name[0] == 'K' && | |
3048 | (rcnd_table[i].type == RUNLEVEL_DOWN || | |
3049 | rcnd_table[i].type == RUNLEVEL_SYSINIT)) { | |
3050 | ||
3051 | if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0) | |
3052 | goto finish; | |
3053 | ||
3054 | if ((r = set_put(shutdown_services, service)) < 0) | |
3055 | goto finish; | |
3056 | } | |
3057 | } | |
3058 | } | |
3059 | ||
3060 | /* Now we loaded all stubs and are aware of the lowest | |
3061 | start-up priority for all services, not let's actually load | |
3062 | the services, this will also tell us which services are | |
3063 | actually native now */ | |
3064 | manager_dispatch_load_queue(m); | |
3065 | ||
3066 | /* If this is a native service, rely on native ways to pull in | |
3067 | * a service, don't pull it in via sysv rcN.d links. */ | |
3068 | for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) | |
3069 | SET_FOREACH(service, runlevel_services[i], j) { | |
3070 | service = unit_follow_merge(service); | |
3071 | ||
3072 | if (service->meta.fragment_path) | |
3073 | continue; | |
3074 | ||
3075 | if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0) | |
3076 | goto finish; | |
3077 | } | |
3078 | ||
3079 | /* We honour K links only for halt/reboot. For the normal | |
3080 | * runlevels we assume the stop jobs will be implicitly added | |
3081 | * by the core logic. Also, we don't really distinguish here | |
3082 | * between the runlevels 0 and 6 and just add them to the | |
3083 | * special shutdown target. On SUSE the boot.d/ runlevel is | |
3084 | * also used for shutdown, so we add links for that too to the | |
3085 | * shutdown target.*/ | |
3086 | SET_FOREACH(service, shutdown_services, j) { | |
3087 | service = unit_follow_merge(service); | |
3088 | ||
3089 | if (service->meta.fragment_path) | |
3090 | continue; | |
3091 | ||
3092 | if ((r = unit_add_two_dependencies_by_name(service, UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0) | |
3093 | goto finish; | |
3094 | } | |
3095 | ||
3096 | r = 0; | |
3097 | ||
3098 | finish: | |
3099 | free(path); | |
3100 | free(fpath); | |
3101 | free(name); | |
3102 | ||
3103 | for (i = 0; i < ELEMENTSOF(rcnd_table); i++) | |
3104 | set_free(runlevel_services[i]); | |
3105 | set_free(shutdown_services); | |
3106 | ||
3107 | if (d) | |
3108 | closedir(d); | |
3109 | ||
3110 | return r; | |
3111 | } | |
3112 | #endif | |
3113 | ||
3114 | static void service_bus_name_owner_change( | |
3115 | Unit *u, | |
3116 | const char *name, | |
3117 | const char *old_owner, | |
3118 | const char *new_owner) { | |
3119 | ||
3120 | Service *s = SERVICE(u); | |
3121 | ||
3122 | assert(s); | |
3123 | assert(name); | |
3124 | ||
3125 | assert(streq(s->bus_name, name)); | |
3126 | assert(old_owner || new_owner); | |
3127 | ||
3128 | if (old_owner && new_owner) | |
3129 | log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner); | |
3130 | else if (old_owner) | |
3131 | log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner); | |
3132 | else | |
3133 | log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner); | |
3134 | ||
3135 | s->bus_name_good = !!new_owner; | |
3136 | ||
3137 | if (s->type == SERVICE_DBUS) { | |
3138 | ||
3139 | /* service_enter_running() will figure out what to | |
3140 | * do */ | |
3141 | if (s->state == SERVICE_RUNNING) | |
3142 | service_enter_running(s, true); | |
3143 | else if (s->state == SERVICE_START && new_owner) | |
3144 | service_enter_start_post(s); | |
3145 | ||
3146 | } else if (new_owner && | |
3147 | s->main_pid <= 0 && | |
3148 | (s->state == SERVICE_START || | |
3149 | s->state == SERVICE_START_POST || | |
3150 | s->state == SERVICE_RUNNING || | |
3151 | s->state == SERVICE_RELOAD)) { | |
3152 | ||
3153 | /* Try to acquire PID from bus service */ | |
3154 | log_debug("Trying to acquire PID from D-Bus name..."); | |
3155 | ||
3156 | bus_query_pid(u->meta.manager, name); | |
3157 | } | |
3158 | } | |
3159 | ||
3160 | static void service_bus_query_pid_done( | |
3161 | Unit *u, | |
3162 | const char *name, | |
3163 | pid_t pid) { | |
3164 | ||
3165 | Service *s = SERVICE(u); | |
3166 | ||
3167 | assert(s); | |
3168 | assert(name); | |
3169 | ||
3170 | log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid); | |
3171 | ||
3172 | if (s->main_pid <= 0 && | |
3173 | (s->state == SERVICE_START || | |
3174 | s->state == SERVICE_START_POST || | |
3175 | s->state == SERVICE_RUNNING || | |
3176 | s->state == SERVICE_RELOAD)) | |
3177 | service_set_main_pid(s, pid); | |
3178 | } | |
3179 | ||
3180 | int service_set_socket_fd(Service *s, int fd, Socket *sock) { | |
3181 | assert(s); | |
3182 | assert(fd >= 0); | |
3183 | ||
3184 | /* This is called by the socket code when instantiating a new | |
3185 | * service for a stream socket and the socket needs to be | |
3186 | * configured. */ | |
3187 | ||
3188 | if (s->meta.load_state != UNIT_LOADED) | |
3189 | return -EINVAL; | |
3190 | ||
3191 | if (s->socket_fd >= 0) | |
3192 | return -EBUSY; | |
3193 | ||
3194 | if (s->state != SERVICE_DEAD) | |
3195 | return -EAGAIN; | |
3196 | ||
3197 | s->socket_fd = fd; | |
3198 | s->got_socket_fd = true; | |
3199 | s->accept_socket = sock; | |
3200 | ||
3201 | return 0; | |
3202 | } | |
3203 | ||
3204 | static void service_reset_failed(Unit *u) { | |
3205 | Service *s = SERVICE(u); | |
3206 | ||
3207 | assert(s); | |
3208 | ||
3209 | if (s->state == SERVICE_FAILED) | |
3210 | service_set_state(s, SERVICE_DEAD); | |
3211 | ||
3212 | s->failure = false; | |
3213 | } | |
3214 | ||
3215 | static int service_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) { | |
3216 | Service *s = SERVICE(u); | |
3217 | int r = 0; | |
3218 | Set *pid_set = NULL; | |
3219 | ||
3220 | assert(s); | |
3221 | ||
3222 | if (s->main_pid <= 0 && who == KILL_MAIN) { | |
3223 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill"); | |
3224 | return -EINVAL; | |
3225 | } | |
3226 | ||
3227 | if (s->control_pid <= 0 && who == KILL_CONTROL) { | |
3228 | dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill"); | |
3229 | return -ENOENT; | |
3230 | } | |
3231 | ||
3232 | if (s->control_pid > 0) | |
3233 | if (kill(s->control_pid, signo) < 0) | |
3234 | r = -errno; | |
3235 | ||
3236 | if (s->main_pid > 0) | |
3237 | if (kill(s->main_pid, signo) < 0) | |
3238 | r = -errno; | |
3239 | ||
3240 | if (mode == KILL_CONTROL_GROUP) { | |
3241 | int q; | |
3242 | ||
3243 | if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) | |
3244 | return -ENOMEM; | |
3245 | ||
3246 | /* Exclude the control/main pid from being killed via the cgroup */ | |
3247 | if (s->control_pid > 0) | |
3248 | if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) { | |
3249 | r = q; | |
3250 | goto finish; | |
3251 | } | |
3252 | ||
3253 | if (s->main_pid > 0) | |
3254 | if ((q = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0) { | |
3255 | r = q; | |
3256 | goto finish; | |
3257 | } | |
3258 | ||
3259 | if ((q = cgroup_bonding_kill_list(s->meta.cgroup_bondings, signo, false, pid_set)) < 0) | |
3260 | if (r != -EAGAIN && r != -ESRCH && r != -ENOENT) | |
3261 | r = q; | |
3262 | } | |
3263 | ||
3264 | finish: | |
3265 | if (pid_set) | |
3266 | set_free(pid_set); | |
3267 | ||
3268 | return r; | |
3269 | } | |
3270 | ||
3271 | static const char* const service_state_table[_SERVICE_STATE_MAX] = { | |
3272 | [SERVICE_DEAD] = "dead", | |
3273 | [SERVICE_START_PRE] = "start-pre", | |
3274 | [SERVICE_START] = "start", | |
3275 | [SERVICE_START_POST] = "start-post", | |
3276 | [SERVICE_RUNNING] = "running", | |
3277 | [SERVICE_EXITED] = "exited", | |
3278 | [SERVICE_RELOAD] = "reload", | |
3279 | [SERVICE_STOP] = "stop", | |
3280 | [SERVICE_STOP_SIGTERM] = "stop-sigterm", | |
3281 | [SERVICE_STOP_SIGKILL] = "stop-sigkill", | |
3282 | [SERVICE_STOP_POST] = "stop-post", | |
3283 | [SERVICE_FINAL_SIGTERM] = "final-sigterm", | |
3284 | [SERVICE_FINAL_SIGKILL] = "final-sigkill", | |
3285 | [SERVICE_FAILED] = "failed", | |
3286 | [SERVICE_AUTO_RESTART] = "auto-restart", | |
3287 | }; | |
3288 | ||
3289 | DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState); | |
3290 | ||
3291 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { | |
3292 | [SERVICE_RESTART_NO] = "no", | |
3293 | [SERVICE_RESTART_ON_SUCCESS] = "on-success", | |
3294 | [SERVICE_RESTART_ON_FAILURE] = "on-failure", | |
3295 | [SERVICE_RESTART_ON_ABORT] = "on-abort", | |
3296 | [SERVICE_RESTART_ALWAYS] = "always" | |
3297 | }; | |
3298 | ||
3299 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
3300 | ||
3301 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { | |
3302 | [SERVICE_SIMPLE] = "simple", | |
3303 | [SERVICE_FORKING] = "forking", | |
3304 | [SERVICE_ONESHOT] = "oneshot", | |
3305 | [SERVICE_DBUS] = "dbus", | |
3306 | [SERVICE_NOTIFY] = "notify" | |
3307 | }; | |
3308 | ||
3309 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
3310 | ||
3311 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { | |
3312 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", | |
3313 | [SERVICE_EXEC_START] = "ExecStart", | |
3314 | [SERVICE_EXEC_START_POST] = "ExecStartPost", | |
3315 | [SERVICE_EXEC_RELOAD] = "ExecReload", | |
3316 | [SERVICE_EXEC_STOP] = "ExecStop", | |
3317 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
3318 | }; | |
3319 | ||
3320 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
3321 | ||
3322 | static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = { | |
3323 | [NOTIFY_NONE] = "none", | |
3324 | [NOTIFY_MAIN] = "main", | |
3325 | [NOTIFY_ALL] = "all" | |
3326 | }; | |
3327 | ||
3328 | DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess); | |
3329 | ||
3330 | const UnitVTable service_vtable = { | |
3331 | .suffix = ".service", | |
3332 | .show_status = true, | |
3333 | ||
3334 | .init = service_init, | |
3335 | .done = service_done, | |
3336 | .load = service_load, | |
3337 | ||
3338 | .coldplug = service_coldplug, | |
3339 | ||
3340 | .dump = service_dump, | |
3341 | ||
3342 | .start = service_start, | |
3343 | .stop = service_stop, | |
3344 | .reload = service_reload, | |
3345 | ||
3346 | .can_reload = service_can_reload, | |
3347 | ||
3348 | .kill = service_kill, | |
3349 | ||
3350 | .serialize = service_serialize, | |
3351 | .deserialize_item = service_deserialize_item, | |
3352 | ||
3353 | .active_state = service_active_state, | |
3354 | .sub_state_to_string = service_sub_state_to_string, | |
3355 | ||
3356 | .check_gc = service_check_gc, | |
3357 | .check_snapshot = service_check_snapshot, | |
3358 | ||
3359 | .sigchld_event = service_sigchld_event, | |
3360 | .timer_event = service_timer_event, | |
3361 | ||
3362 | .reset_failed = service_reset_failed, | |
3363 | ||
3364 | .cgroup_notify_empty = service_cgroup_notify_event, | |
3365 | .notify_message = service_notify_message, | |
3366 | ||
3367 | .bus_name_owner_change = service_bus_name_owner_change, | |
3368 | .bus_query_pid_done = service_bus_query_pid_done, | |
3369 | ||
3370 | .bus_interface = "org.freedesktop.systemd1.Service", | |
3371 | .bus_message_handler = bus_service_message_handler, | |
3372 | .bus_invalidating_properties = bus_service_invalidating_properties, | |
3373 | ||
3374 | #ifdef HAVE_SYSV_COMPAT | |
3375 | .enumerate = service_enumerate | |
3376 | #endif | |
3377 | }; |