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