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reboot: handle -p switch properly
[thirdparty/systemd.git] / src / service.c
CommitLineData
5cb5a6ff
LP		 1/*-*- Mode: C; c-basic-offset: 8 -*-*/
2
a7334b09
LP		 3/***
4 This file is part of systemd.
5
6 Copyright 2010 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20***/
21
5cb5a6ff 22#include <errno.h>
034c6ed7 23#include <signal.h>
2c4104f0
LP		 24#include <dirent.h>
25#include <unistd.h>
5cb5a6ff 26
87f0e418 27#include "unit.h"
5cb5a6ff
LP		 28#include "service.h"
29#include "load-fragment.h"
30#include "load-dropin.h"
034c6ed7 31#include "log.h"
2c4104f0 32#include "strv.h"
9e2f7c11 33#include "unit-name.h"
4139c1b2 34#include "dbus-service.h"
514f4ef5 35#include "special.h"
398ef8ba 36#include "bus-errors.h"
2c4104f0
LP		 37
38#define COMMENTS "#;\n"
39#define NEWLINES "\n\r"
034c6ed7 40
09cd1ab1
LP		 41typedef enum RunlevelType {
42 RUNLEVEL_UP,
43 RUNLEVEL_DOWN,
fc5df99e 44 RUNLEVEL_SYSINIT
09cd1ab1
LP		 45} RunlevelType;
46
47static const struct {
48 const char *path;
49 const char *target;
50 const RunlevelType type;
51} rcnd_table[] = {
9d25f5ed 52 /* Standard SysV runlevels for start-up */
514f4ef5 53 { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP },
fbe9f3a9
LP		 54 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
55 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
56 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
57 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
fbe9f3a9 58
cfe243e3 59 /* SUSE style boot.d */
fc5df99e 60 { "boot.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
fbe9f3a9
LP		 61
62 /* Debian style rcS.d */
fc5df99e 63 { "rcS.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
9d25f5ed
LP		 64
65 /* Standard SysV runlevels for shutdown */
66 { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN },
67 { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN }
68
69 /* Note that the order here matters, as we read the
70 directories in this order, and we want to make sure that
71 sysv_start_priority is known when we first load the
72 unit. And that value we only know from S links. Hence
73 UP/SYSINIT must be read before DOWN */
23a177ef
LP		 74};
75
09cd1ab1 76#define RUNLEVELS_UP "12345"
fbe9f3a9
LP		 77/* #define RUNLEVELS_DOWN "06" */
78/* #define RUNLEVELS_BOOT "bBsS" */
09cd1ab1 79
acbb0225 80static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
87f0e418
LP		 81 [SERVICE_DEAD] = UNIT_INACTIVE,
82 [SERVICE_START_PRE] = UNIT_ACTIVATING,
83 [SERVICE_START] = UNIT_ACTIVATING,
84 [SERVICE_START_POST] = UNIT_ACTIVATING,
85 [SERVICE_RUNNING] = UNIT_ACTIVE,
80876c20 86 [SERVICE_EXITED] = UNIT_ACTIVE,
032ff4af 87 [SERVICE_RELOAD] = UNIT_RELOADING,
87f0e418
LP		 88 [SERVICE_STOP] = UNIT_DEACTIVATING,
89 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
90 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
91 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
92 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
93 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
032ff4af 94 [SERVICE_MAINTENANCE] = UNIT_MAINTENANCE,
6124958c 95 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
034c6ed7 96};
5cb5a6ff 97
a16e1123
LP		 98static void service_init(Unit *u) {
99 Service *s = SERVICE(u);
100
101 assert(u);
102 assert(u->meta.load_state == UNIT_STUB);
103
104 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
105 s->restart_usec = DEFAULT_RESTART_USEC;
106 s->timer_watch.type = WATCH_INVALID;
107 s->sysv_start_priority = -1;
108 s->socket_fd = -1;
109
110 exec_context_init(&s->exec_context);
111
112 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
113
114 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
115}
116
5e94833f
LP		 117static void service_unwatch_control_pid(Service *s) {
118 assert(s);
119
120 if (s->control_pid <= 0)
121 return;
122
123 unit_unwatch_pid(UNIT(s), s->control_pid);
124 s->control_pid = 0;
125}
126
127static void service_unwatch_main_pid(Service *s) {
128 assert(s);
129
130 if (s->main_pid <= 0)
131 return;
132
133 unit_unwatch_pid(UNIT(s), s->main_pid);
134 s->main_pid = 0;
135}
136
5925dd3c 137static int service_set_main_pid(Service *s, pid_t pid) {
e55224ca
LP		 138 pid_t ppid;
139
5925dd3c
LP		 140 assert(s);
141
142 if (pid <= 1)
143 return -EINVAL;
144
145 if (pid == getpid())
146 return -EINVAL;
147
e55224ca
LP		 148 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid())
149 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
150 s->meta.id, (unsigned long) pid);
151
5925dd3c
LP		 152 s->main_pid = pid;
153 s->main_pid_known = true;
154
b58b4116
LP		 155 exec_status_start(&s->main_exec_status, pid);
156
5925dd3c
LP		 157 return 0;
158}
159
4f2d528d
LP		 160static void service_close_socket_fd(Service *s) {
161 assert(s);
162
163 if (s->socket_fd < 0)
164 return;
165
166 close_nointr_nofail(s->socket_fd);
167 s->socket_fd = -1;
168}
169
6cf6bbc2
LP		 170static void service_connection_unref(Service *s) {
171 assert(s);
172
173 if (!s->socket)
174 return;
175
176 socket_connection_unref(s->socket);
177 s->socket = NULL;
178}
179
87f0e418
LP		 180static void service_done(Unit *u) {
181 Service *s = SERVICE(u);
44d8db9e
LP		 182
183 assert(s);
184
185 free(s->pid_file);
186 s->pid_file = NULL;
187
2c4104f0
LP		 188 free(s->sysv_path);
189 s->sysv_path = NULL;
190
8309400a
LP		 191 free(s->sysv_runlevels);
192 s->sysv_runlevels = NULL;
193
8c47c732
LP		 194 free(s->status_text);
195 s->status_text = NULL;
196
44d8db9e 197 exec_context_done(&s->exec_context);
e537352b 198 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
44d8db9e
LP		 199 s->control_command = NULL;
200
201 /* This will leak a process, but at least no memory or any of
202 * our resources */
5e94833f
LP		 203 service_unwatch_main_pid(s);
204 service_unwatch_control_pid(s);
44d8db9e 205
05e343b7
LP		 206 if (s->bus_name) {
207 unit_unwatch_bus_name(UNIT(u), s->bus_name);
208 free(s->bus_name);
209 s->bus_name = NULL;
210 }
211
4f2d528d 212 service_close_socket_fd(s);
6cf6bbc2 213 service_connection_unref(s);
4f2d528d 214
acbb0225 215 unit_unwatch_timer(u, &s->timer_watch);
44d8db9e
LP		 216}
217
b7ccee3c
LP		 218static char *sysv_translate_name(const char *name) {
219 char *r;
220
221 if (!(r = new(char, strlen(name) + sizeof(".service"))))
222 return NULL;
223
224 if (startswith(name, "boot."))
225 /* Drop SuSE-style boot. prefix */
226 strcpy(stpcpy(r, name + 5), ".service");
227 else if (endswith(name, ".sh"))
228 /* Drop Debian-style .sh suffix */
229 strcpy(stpcpy(r, name) - 3, ".service");
230 else
231 /* Normal init scripts */
232 strcpy(stpcpy(r, name), ".service");
233
234 return r;
235}
236
237static int sysv_translate_facility(const char *name, char **_r) {
2c4104f0
LP		 238
239 static const char * const table[] = {
6464aa08 240 /* LSB defined facilities */
2c4104f0
LP		 241 "$local_fs", SPECIAL_LOCAL_FS_TARGET,
242 "$network", SPECIAL_NETWORK_TARGET,
243 "$named", SPECIAL_NSS_LOOKUP_TARGET,
244 "$portmap", SPECIAL_RPCBIND_TARGET,
245 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
246 "$syslog", SPECIAL_SYSLOG_TARGET,
6464aa08
LP		 247 "$time", SPECIAL_RTC_SET_TARGET,
248
249 /* Debian extensions */
250 "$mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
251 "$mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
1e287fe3 252 "$x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE
2c4104f0
LP		 253 };
254
255 unsigned i;
256 char *r;
257
258 for (i = 0; i < ELEMENTSOF(table); i += 2)
259 if (streq(table[i], name)) {
260 if (!(r = strdup(table[i+1])))
261 return -ENOMEM;
262
263 goto finish;
264 }
265
266 if (*name == '$')
267 return 0;
268
b7ccee3c 269 if (!(r = sysv_translate_name(name)))
2c4104f0
LP		 270 return -ENOMEM;
271
272finish:
273
274 if (_r)
275 *_r = r;
276
277 return 1;
278}
279
56d748b4 280static int sysv_fix_order(Service *s) {
2c4104f0
LP		 281 Meta *other;
282 int r;
283
284 assert(s);
285
286 if (s->sysv_start_priority < 0)
287 return 0;
288
23a177ef
LP		 289 /* For each pair of services where at least one lacks a LSB
290 * header, we use the start priority value to order things. */
2c4104f0 291
4cd1fbcc 292 LIST_FOREACH(units_per_type, other, s->meta.manager->units_per_type[UNIT_SERVICE]) {
2c4104f0
LP		 293 Service *t;
294 UnitDependency d;
295
296 t = (Service*) other;
297
298 if (s == t)
299 continue;
300
301 if (t->sysv_start_priority < 0)
302 continue;
303
51a1a79d
LP		 304 /* If both units have modern headers we don't care
305 * about the priorities */
306 if ((!s->sysv_path || s->sysv_has_lsb) &&
307 (!t->sysv_path || t->sysv_has_lsb))
23a177ef
LP		 308 continue;
309
2c4104f0
LP		 310 if (t->sysv_start_priority < s->sysv_start_priority)
311 d = UNIT_AFTER;
312 else if (t->sysv_start_priority > s->sysv_start_priority)
313 d = UNIT_BEFORE;
314 else
315 continue;
316
317 /* FIXME: Maybe we should compare the name here lexicographically? */
318
701cc384 319 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
2c4104f0
LP		 320 return r;
321 }
322
323 return 0;
324}
325
326static ExecCommand *exec_command_new(const char *path, const char *arg1) {
327 ExecCommand *c;
328
329 if (!(c = new0(ExecCommand, 1)))
330 return NULL;
331
332 if (!(c->path = strdup(path))) {
333 free(c);
334 return NULL;
335 }
336
337 if (!(c->argv = strv_new(path, arg1, NULL))) {
338 free(c->path);
339 free(c);
340 return NULL;
341 }
342
343 return c;
344}
345
346static int sysv_exec_commands(Service *s) {
347 ExecCommand *c;
348
349 assert(s);
350 assert(s->sysv_path);
351
352 if (!(c = exec_command_new(s->sysv_path, "start")))
353 return -ENOMEM;
354 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
355
356 if (!(c = exec_command_new(s->sysv_path, "stop")))
357 return -ENOMEM;
358 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
359
360 if (!(c = exec_command_new(s->sysv_path, "reload")))
361 return -ENOMEM;
362 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
363
364 return 0;
365}
366
e537352b 367static int service_load_sysv_path(Service *s, const char *path) {
2c4104f0
LP		 368 FILE *f;
369 Unit *u;
370 unsigned line = 0;
371 int r;
372 enum {
373 NORMAL,
374 DESCRIPTION,
375 LSB,
376 LSB_DESCRIPTION
377 } state = NORMAL;
23a177ef
LP		 378
379 assert(s);
380 assert(path);
2c4104f0
LP		 381
382 u = UNIT(s);
383
384 if (!(f = fopen(path, "re"))) {
385 r = errno == ENOENT ? 0 : -errno;
386 goto finish;
387 }
388
2c4104f0
LP		 389 free(s->sysv_path);
390 if (!(s->sysv_path = strdup(path))) {
391 r = -ENOMEM;
392 goto finish;
393 }
394
395 while (!feof(f)) {
396 char l[LINE_MAX], *t;
397
398 if (!fgets(l, sizeof(l), f)) {
399 if (feof(f))
400 break;
401
402 r = -errno;
403 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
404 goto finish;
405 }
406
407 line++;
408
409 t = strstrip(l);
410 if (*t != '#')
411 continue;
412
413 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
414 state = LSB;
23a177ef 415 s->sysv_has_lsb = true;
2c4104f0
LP		 416 continue;
417 }
418
419 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
420 state = NORMAL;
421 continue;
422 }
423
424 t++;
425 t += strspn(t, WHITESPACE);
426
427 if (state == NORMAL) {
428
429 /* Try to parse Red Hat style chkconfig headers */
430
c2b35af6 431 if (startswith_no_case(t, "chkconfig:")) {
2c4104f0 432 int start_priority;
8309400a 433 char runlevels[16], *k;
2c4104f0
LP		 434
435 state = NORMAL;
436
8309400a
LP		 437 if (sscanf(t+10, "%15s %i %*i",
438 runlevels,
439 &start_priority) != 2) {
2c4104f0
LP		 440
441 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
442 continue;
443 }
444
fbe9f3a9
LP		 445 /* A start priority gathered from the
446 * symlink farms is preferred over the
447 * data from the LSB header. */
8309400a 448 if (start_priority < 0 || start_priority > 99)
2c4104f0 449 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
db06e3b6 450 else if (s->sysv_start_priority < 0)
8309400a
LP		 451 s->sysv_start_priority = start_priority;
452
453 char_array_0(runlevels);
454 k = delete_chars(runlevels, WHITESPACE "-");
455
456 if (k[0]) {
457 char *d;
458
459 if (!(d = strdup(k))) {
460 r = -ENOMEM;
461 goto finish;
462 }
463
464 free(s->sysv_runlevels);
465 s->sysv_runlevels = d;
2c4104f0
LP		 466 }
467
ed4c1cc6
LP		 468 } else if (startswith_no_case(t, "description:") &&
469 !u->meta.description) {
2c4104f0
LP		 470
471 size_t k = strlen(t);
472 char *d;
473
474 if (t[k-1] == '\\') {
475 state = DESCRIPTION;
476 t[k-1] = 0;
477 }
478
479 if (!(d = strdup(strstrip(t+12)))) {
480 r = -ENOMEM;
481 goto finish;
482 }
483
484 free(u->meta.description);
485 u->meta.description = d;
486
c2b35af6 487 } else if (startswith_no_case(t, "pidfile:")) {
2c4104f0
LP		 488
489 char *fn;
490
491 state = NORMAL;
492
493 fn = strstrip(t+8);
494 if (!path_is_absolute(fn)) {
495 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
496 continue;
497 }
498
499 if (!(fn = strdup(fn))) {
500 r = -ENOMEM;
501 goto finish;
502 }
503
504 free(s->pid_file);
505 s->pid_file = fn;
506 }
507
508 } else if (state == DESCRIPTION) {
509
510 /* Try to parse Red Hat style description
511 * continuation */
512
513 size_t k = strlen(t);
514 char *d;
515
516 if (t[k-1] == '\\')
517 t[k-1] = 0;
518 else
519 state = NORMAL;
520
521 assert(u->meta.description);
522 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
523 r = -ENOMEM;
524 goto finish;
525 }
526
527 free(u->meta.description);
528 u->meta.description = d;
529
530 } else if (state == LSB || state == LSB_DESCRIPTION) {
531
c2b35af6 532 if (startswith_no_case(t, "Provides:")) {
2c4104f0
LP		 533 char *i, *w;
534 size_t z;
535
536 state = LSB;
537
f60f22df 538 FOREACH_WORD_QUOTED(w, z, t+9, i) {
2c4104f0
LP		 539 char *n, *m;
540
541 if (!(n = strndup(w, z))) {
542 r = -ENOMEM;
543 goto finish;
544 }
545
b7ccee3c 546 r = sysv_translate_facility(n, &m);
2c4104f0
LP		 547 free(n);
548
549 if (r < 0)
550 goto finish;
551
552 if (r == 0)
553 continue;
554
bd77d0fc
LP		 555 if (unit_name_to_type(m) == UNIT_SERVICE)
556 r = unit_add_name(u, m);
9d25f5ed
LP		 557 else if (s->sysv_start_priority >= 0)
558 r = unit_add_two_dependencies_by_name_inverse(u, UNIT_AFTER, UNIT_WANTS, m, NULL, true);
2c966c03 559 else
9d25f5ed 560 r = unit_add_dependency_by_name_inverse(u, UNIT_AFTER, m, NULL, true);
bd77d0fc 561
2c4104f0
LP		 562 free(m);
563
564 if (r < 0)
565 goto finish;
566 }
567
c2b35af6
LP		 568 } else if (startswith_no_case(t, "Required-Start:") ||
569 startswith_no_case(t, "Should-Start:") ||
570 startswith_no_case(t, "X-Start-Before:") ||
571 startswith_no_case(t, "X-Start-After:")) {
2c4104f0
LP		 572 char *i, *w;
573 size_t z;
574
575 state = LSB;
576
f60f22df 577 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
2c4104f0
LP		 578 char *n, *m;
579
580 if (!(n = strndup(w, z))) {
581 r = -ENOMEM;
582 goto finish;
583 }
584
b7ccee3c 585 r = sysv_translate_facility(n, &m);
2c4104f0
LP		 586 free(n);
587
588 if (r < 0)
589 goto finish;
590
591 if (r == 0)
592 continue;
593
c2b35af6 594 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
2c4104f0
LP		 595 free(m);
596
597 if (r < 0)
598 goto finish;
599 }
c2b35af6 600 } else if (startswith_no_case(t, "Default-Start:")) {
8309400a
LP		 601 char *k, *d;
602
603 state = LSB;
604
605 k = delete_chars(t+14, WHITESPACE "-");
606
607 if (k[0] != 0) {
608 if (!(d = strdup(k))) {
609 r = -ENOMEM;
610 goto finish;
611 }
612
613 free(s->sysv_runlevels);
614 s->sysv_runlevels = d;
615 }
2c4104f0 616
ed4c1cc6
LP		 617 } else if (startswith_no_case(t, "Description:") &&
618 !u->meta.description) {
2c4104f0
LP		 619 char *d;
620
ed4c1cc6
LP		 621 /* We use the long description only if
622 * no short description is set. */
623
2c4104f0
LP		 624 state = LSB_DESCRIPTION;
625
626 if (!(d = strdup(strstrip(t+12)))) {
627 r = -ENOMEM;
628 goto finish;
629 }
630
631 free(u->meta.description);
632 u->meta.description = d;
633
ed4c1cc6 634 } else if (startswith_no_case(t, "Short-Description:")) {
2c4104f0
LP		 635 char *d;
636
2c4104f0
LP		 637 state = LSB;
638
639 if (!(d = strdup(strstrip(t+18)))) {
640 r = -ENOMEM;
641 goto finish;
642 }
643
7740296d 644 free(u->meta.description);
2c4104f0
LP		 645 u->meta.description = d;
646
723c83fd
LP		 647 } else if (startswith_no_case(t, "X-Interactive:")) {
648 int b;
649
650 if ((b = parse_boolean(strstrip(t+14))) < 0) {
651 log_warning("[%s:%u] Couldn't parse interactive flag. Ignoring.", path, line);
652 continue;
653 }
654
655 if (b)
656 s->exec_context.std_input = EXEC_INPUT_TTY;
657 else
658 s->exec_context.std_input = EXEC_INPUT_NULL;
659
2c4104f0
LP		 660 } else if (state == LSB_DESCRIPTION) {
661
662 if (startswith(l, "#\t") || startswith(l, "# ")) {
663 char *d;
664
665 assert(u->meta.description);
666 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
667 r = -ENOMEM;
668 goto finish;
669 }
670
671 free(u->meta.description);
672 u->meta.description = d;
673 } else
674 state = LSB;
675 }
676 }
677 }
678
2c4104f0
LP		 679 if ((r = sysv_exec_commands(s)) < 0)
680 goto finish;
681
a40eb732 682 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
0bc824be
LP		 683 /* If there a runlevels configured for this service
684 * but none of the standard ones, then we assume this
685 * is some special kind of service (which might be
686 * needed for early boot) and don't create any links
687 * to it. */
688
a40eb732 689 s->meta.default_dependencies = false;
09cd1ab1 690
09cd1ab1
LP		 691 /* Don't timeout special services during boot (like fsck) */
692 s->timeout_usec = 0;
a40eb732 693 }
0fd030be 694
80876c20 695 /* Special setting for all SysV services */
1f48cf56 696 s->type = SERVICE_FORKING;
80876c20 697 s->valid_no_process = true;
1f48cf56 698 s->restart = SERVICE_ONCE;
acb591e4 699 s->exec_context.std_output = EXEC_OUTPUT_TTY;
2e22afe9 700 s->exec_context.kill_mode = KILL_PROCESS_GROUP;
80876c20 701
e537352b 702 u->meta.load_state = UNIT_LOADED;
23a177ef 703 r = 0;
2c4104f0
LP		 704
705finish:
706
707 if (f)
708 fclose(f);
709
710 return r;
711}
712
e537352b 713static int service_load_sysv_name(Service *s, const char *name) {
2c4104f0
LP		 714 char **p;
715
716 assert(s);
717 assert(name);
718
d017c6ca
LP		 719 /* For SysV services we strip the boot. or .sh
720 * prefixes/suffixes. */
721 if (startswith(name, "boot.") ||
722 endswith(name, ".sh.service"))
723 return -ENOENT;
724
4cd1fbcc 725 STRV_FOREACH(p, s->meta.manager->lookup_paths.sysvinit_path) {
2c4104f0
LP		 726 char *path;
727 int r;
728
729 if (asprintf(&path, "%s/%s", *p, name) < 0)
730 return -ENOMEM;
731
732 assert(endswith(path, ".service"));
733 path[strlen(path)-8] = 0;
734
e537352b 735 r = service_load_sysv_path(s, path);
fbe9f3a9 736
4cd1fbcc 737 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
d017c6ca 738 /* Try Debian style xxx.sh source'able init scripts */
fbe9f3a9
LP		 739 strcat(path, ".sh");
740 r = service_load_sysv_path(s, path);
741 }
742
2c4104f0
LP		 743 free(path);
744
4cd1fbcc 745 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
cfe243e3 746 /* Try SUSE style boot.xxx init scripts */
fbe9f3a9
LP		 747
748 if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
749 return -ENOMEM;
750
751 path[strlen(path)-8] = 0;
752 r = service_load_sysv_path(s, path);
753 free(path);
754 }
755
23a177ef 756 if (r < 0)
2c4104f0 757 return r;
23a177ef 758
4cd1fbcc 759 if ((s->meta.load_state != UNIT_STUB))
23a177ef 760 break;
2c4104f0
LP		 761 }
762
763 return 0;
764}
765
e537352b 766static int service_load_sysv(Service *s) {
2c4104f0
LP		 767 const char *t;
768 Iterator i;
769 int r;
770
5cb5a6ff
LP		 771 assert(s);
772
773 /* Load service data from SysV init scripts, preferably with
774 * LSB headers ... */
775
4cd1fbcc 776 if (strv_isempty(s->meta.manager->lookup_paths.sysvinit_path))
2c4104f0
LP		 777 return 0;
778
4cd1fbcc 779 if ((t = s->meta.id))
e537352b 780 if ((r = service_load_sysv_name(s, t)) < 0)
2c4104f0
LP		 781 return r;
782
4cd1fbcc
LP		 783 if (s->meta.load_state == UNIT_STUB)
784 SET_FOREACH(t, s->meta.names, i) {
785 if (t == s->meta.id)
e537352b
LP		 786 continue;
787
788 if ((r == service_load_sysv_name(s, t)) < 0)
23a177ef
LP		 789 return r;
790
4cd1fbcc 791 if (s->meta.load_state != UNIT_STUB)
23a177ef
LP		 792 break;
793 }
2c4104f0
LP		 794
795 return 0;
5cb5a6ff
LP		 796}
797
05e343b7
LP		 798static int service_add_bus_name(Service *s) {
799 char *n;
800 int r;
801
802 assert(s);
803 assert(s->bus_name);
804
805 if (asprintf(&n, "dbus-%s.service", s->bus_name) < 0)
806 return 0;
807
808 r = unit_merge_by_name(UNIT(s), n);
809 free(n);
810
811 return r;
812}
813
243b1432
LP		 814static int service_verify(Service *s) {
815 assert(s);
816
4cd1fbcc 817 if (s->meta.load_state != UNIT_LOADED)
243b1432
LP		 818 return 0;
819
820 if (!s->exec_command[SERVICE_EXEC_START]) {
4cd1fbcc 821 log_error("%s lacks ExecStart setting. Refusing.", s->meta.id);
243b1432
LP		 822 return -EINVAL;
823 }
824
6cf6bbc2 825 if (s->exec_command[SERVICE_EXEC_START]->command_next) {
4cd1fbcc 826 log_error("%s has more than one ExecStart setting. Refusing.", s->meta.id);
6cf6bbc2
LP		 827 return -EINVAL;
828 }
829
05e343b7 830 if (s->type == SERVICE_DBUS && !s->bus_name) {
4d0e5dbd
LP		 831 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", s->meta.id);
832 return -EINVAL;
833 }
834
2e22afe9 835 if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
4d0e5dbd 836 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id);
05e343b7
LP		 837 return -EINVAL;
838 }
839
243b1432
LP		 840 return 0;
841}
842
a40eb732
LP		 843static int service_add_default_dependencies(Service *s) {
844 int r;
845
846 assert(s);
847
848 /* Add a number of automatic dependencies useful for the
849 * majority of services. */
850
851 /* First, pull in base system */
852 if (s->meta.manager->running_as == MANAGER_SYSTEM) {
853
854 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
855 return r;
856
857 } else if (s->meta.manager->running_as == MANAGER_SESSION) {
858
859 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
860 return r;
861 }
862
863 /* Second, activate normal shutdown */
864 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
865}
866
e537352b
LP		 867static int service_load(Unit *u) {
868 int r;
869 Service *s = SERVICE(u);
870
871 assert(s);
1e2e8133 872
5cb5a6ff 873 /* Load a .service file */
e537352b 874 if ((r = unit_load_fragment(u)) < 0)
5cb5a6ff
LP		 875 return r;
876
bd77d0fc 877 /* Load a classic init script as a fallback, if we couldn't find anything */
e537352b
LP		 878 if (u->meta.load_state == UNIT_STUB)
879 if ((r = service_load_sysv(s)) < 0)
23a177ef 880 return r;
d46de8a1 881
23a177ef 882 /* Still nothing found? Then let's give up */
e537352b 883 if (u->meta.load_state == UNIT_STUB)
23a177ef 884 return -ENOENT;
034c6ed7 885
23a177ef
LP		 886 /* We were able to load something, then let's add in the
887 * dropin directories. */
888 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
8e274523 889 return r;
23a177ef
LP		 890
891 /* This is a new unit? Then let's add in some extras */
e537352b 892 if (u->meta.load_state == UNIT_LOADED) {
23a177ef
LP		 893 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
894 return r;
895
896 if ((r = unit_add_default_cgroup(u)) < 0)
897 return r;
898
56d748b4 899 if ((r = sysv_fix_order(s)) < 0)
23a177ef 900 return r;
05e343b7
LP		 901
902 if (s->bus_name) {
903 if ((r = service_add_bus_name(s)) < 0)
904 return r;
905
906 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
a40eb732 907 return r;
05e343b7 908 }
c952c6ec
LP		 909
910 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
911 s->notify_access = NOTIFY_MAIN;
a40eb732
LP		 912
913 if (s->type == SERVICE_DBUS || s->bus_name)
914 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_TARGET, NULL, true)) < 0)
915 return r;
916
917 if (s->meta.default_dependencies)
918 if ((r = service_add_default_dependencies(s)) < 0)
919 return r;
8e274523
LP		 920 }
921
243b1432 922 return service_verify(s);
034c6ed7
LP		 923}
924
87f0e418 925static void service_dump(Unit *u, FILE *f, const char *prefix) {
5cb5a6ff 926
5cb5a6ff 927 ServiceExecCommand c;
87f0e418 928 Service *s = SERVICE(u);
47be870b
LP		 929 const char *prefix2;
930 char *p2;
5cb5a6ff
LP		 931
932 assert(s);
933
47be870b
LP		 934 p2 = strappend(prefix, "\t");
935 prefix2 = p2 ? p2 : prefix;
44d8db9e 936
5cb5a6ff 937 fprintf(f,
81a2b7ce
LP		 938 "%sService State: %s\n"
939 "%sPermissionsStartOnly: %s\n"
8e274523 940 "%sRootDirectoryStartOnly: %s\n"
03d6ab85 941 "%sValidNoProcess: %s\n"
c952c6ec
LP		 942 "%sType: %s\n"
943 "%sNotifyAccess: %s\n",
81a2b7ce
LP		 944 prefix, service_state_to_string(s->state),
945 prefix, yes_no(s->permissions_start_only),
8e274523 946 prefix, yes_no(s->root_directory_start_only),
03d6ab85 947 prefix, yes_no(s->valid_no_process),
c952c6ec
LP		 948 prefix, service_type_to_string(s->type),
949 prefix, notify_access_to_string(s->notify_access));
5cb5a6ff 950
70123e68
LP		 951 if (s->control_pid > 0)
952 fprintf(f,
bb00e604
LP		 953 "%sControl PID: %lu\n",
954 prefix, (unsigned long) s->control_pid);
70123e68
LP		 955
956 if (s->main_pid > 0)
957 fprintf(f,
bb00e604
LP		 958 "%sMain PID: %lu\n",
959 prefix, (unsigned long) s->main_pid);
70123e68 960
034c6ed7
LP		 961 if (s->pid_file)
962 fprintf(f,
963 "%sPIDFile: %s\n",
964 prefix, s->pid_file);
965
05e343b7
LP		 966 if (s->bus_name)
967 fprintf(f,
968 "%sBusName: %s\n"
969 "%sBus Name Good: %s\n",
970 prefix, s->bus_name,
971 prefix, yes_no(s->bus_name_good));
972
5cb5a6ff
LP		 973 exec_context_dump(&s->exec_context, f, prefix);
974
e537352b 975 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
5cb5a6ff 976
44d8db9e
LP		 977 if (!s->exec_command[c])
978 continue;
979
40d50879 980 fprintf(f, "%s-> %s:\n",
94f04347 981 prefix, service_exec_command_to_string(c));
44d8db9e
LP		 982
983 exec_command_dump_list(s->exec_command[c], f, prefix2);
5cb5a6ff 984 }
44d8db9e 985
2c4104f0
LP		 986 if (s->sysv_path)
987 fprintf(f,
23a177ef
LP		 988 "%sSysV Init Script Path: %s\n"
989 "%sSysV Init Script has LSB Header: %s\n",
990 prefix, s->sysv_path,
991 prefix, yes_no(s->sysv_has_lsb));
2c4104f0
LP		 992
993 if (s->sysv_start_priority >= 0)
994 fprintf(f,
23a177ef 995 "%sSysVStartPriority: %i\n",
2c4104f0
LP		 996 prefix, s->sysv_start_priority);
997
8309400a
LP		 998 if (s->sysv_runlevels)
999 fprintf(f, "%sSysVRunLevels: %s\n",
1000 prefix, s->sysv_runlevels);
23a177ef 1001
8c47c732
LP		 1002 if (s->status_text)
1003 fprintf(f, "%sStatus Text: %s\n",
1004 prefix, s->status_text);
1005
47be870b 1006 free(p2);
5cb5a6ff
LP		 1007}
1008
034c6ed7
LP		 1009static int service_load_pid_file(Service *s) {
1010 char *k;
034c6ed7 1011 int r;
5925dd3c 1012 pid_t pid;
034c6ed7
LP		 1013
1014 assert(s);
1015
1016 if (s->main_pid_known)
1017 return 0;
1018
5e94833f
LP		 1019 assert(s->main_pid <= 0);
1020
034c6ed7
LP		 1021 if (!s->pid_file)
1022 return -ENOENT;
1023
1024 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
1025 return r;
1026
5925dd3c
LP		 1027 r = parse_pid(k, &pid);
1028 free(k);
034c6ed7 1029
5925dd3c
LP		 1030 if (r < 0)
1031 return r;
406eaf93 1032
5925dd3c
LP		 1033 if (kill(pid, 0) < 0 && errno != EPERM) {
1034 log_warning("PID %lu read from file %s does not exist. Your service or init script might be broken.",
1035 (unsigned long) pid, s->pid_file);
b8c597d5
LP		 1036 return -ESRCH;
1037 }
1038
5925dd3c 1039 if ((r = service_set_main_pid(s, pid)) < 0)
16f6025e
LP		 1040 return r;
1041
5925dd3c
LP		 1042 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1043 /* FIXME: we need to do something here */
1044 return r;
034c6ed7
LP		 1045
1046 return 0;
1047}
1048
3e33402a
LP		 1049static int service_get_sockets(Service *s, Set **_set) {
1050 Set *set;
ceee3d82
LP		 1051 Iterator i;
1052 char *t;
3e33402a 1053 int r;
ceee3d82
LP		 1054
1055 assert(s);
3e33402a
LP		 1056 assert(_set);
1057
6cf6bbc2
LP		 1058 if (s->socket_fd >= 0)
1059 return 0;
1060
3e33402a
LP		 1061 /* Collects all Socket objects that belong to this
1062 * service. Note that a service might have multiple sockets
1063 * via multiple names. */
1064
1065 if (!(set = set_new(NULL, NULL)))
1066 return -ENOMEM;
ceee3d82 1067
4cd1fbcc 1068 SET_FOREACH(t, s->meta.names, i) {
ceee3d82
LP		 1069 char *k;
1070 Unit *p;
1071
1072 /* Look for all socket objects that go by any of our
1073 * units and collect their fds */
1074
3e33402a
LP		 1075 if (!(k = unit_name_change_suffix(t, ".socket"))) {
1076 r = -ENOMEM;
1077 goto fail;
1078 }
ceee3d82 1079
4cd1fbcc 1080 p = manager_get_unit(s->meta.manager, k);
ceee3d82
LP		 1081 free(k);
1082
8d567588
LP		 1083 if (!p)
1084 continue;
ceee3d82 1085
3e33402a
LP		 1086 if ((r = set_put(set, p)) < 0)
1087 goto fail;
ceee3d82
LP		 1088 }
1089
3e33402a
LP		 1090 *_set = set;
1091 return 0;
1092
1093fail:
1094 set_free(set);
1095 return r;
1096}
1097
e537352b 1098static int service_notify_sockets_dead(Service *s) {
3e33402a
LP		 1099 Iterator i;
1100 Set *set;
47be870b 1101 Socket *sock;
3e33402a
LP		 1102 int r;
1103
1104 assert(s);
1105
6cf6bbc2
LP		 1106 if (s->socket_fd >= 0)
1107 return 0;
1108
3e33402a 1109 /* Notifies all our sockets when we die */
3e33402a
LP		 1110 if ((r = service_get_sockets(s, &set)) < 0)
1111 return r;
1112
47be870b
LP		 1113 SET_FOREACH(sock, set, i)
1114 socket_notify_service_dead(sock);
3e33402a
LP		 1115
1116 set_free(set);
1117
ceee3d82
LP		 1118 return 0;
1119}
1120
034c6ed7
LP		 1121static void service_set_state(Service *s, ServiceState state) {
1122 ServiceState old_state;
5cb5a6ff
LP		 1123 assert(s);
1124
034c6ed7 1125 old_state = s->state;
5cb5a6ff 1126 s->state = state;
034c6ed7
LP		 1127
1128 if (state != SERVICE_START_PRE &&
1129 state != SERVICE_START &&
1130 state != SERVICE_START_POST &&
1131 state != SERVICE_RELOAD &&
1132 state != SERVICE_STOP &&
1133 state != SERVICE_STOP_SIGTERM &&
1134 state != SERVICE_STOP_SIGKILL &&
1135 state != SERVICE_STOP_POST &&
1136 state != SERVICE_FINAL_SIGTERM &&
1137 state != SERVICE_FINAL_SIGKILL &&
1138 state != SERVICE_AUTO_RESTART)
acbb0225 1139 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1140
7d55e835
LP		 1141 if (state != SERVICE_START &&
1142 state != SERVICE_START_POST &&
034c6ed7
LP		 1143 state != SERVICE_RUNNING &&
1144 state != SERVICE_RELOAD &&
1145 state != SERVICE_STOP &&
1146 state != SERVICE_STOP_SIGTERM &&
1147 state != SERVICE_STOP_SIGKILL)
5e94833f 1148 service_unwatch_main_pid(s);
034c6ed7
LP		 1149
1150 if (state != SERVICE_START_PRE &&
1151 state != SERVICE_START &&
1152 state != SERVICE_START_POST &&
1153 state != SERVICE_RELOAD &&
1154 state != SERVICE_STOP &&
1155 state != SERVICE_STOP_SIGTERM &&
1156 state != SERVICE_STOP_SIGKILL &&
1157 state != SERVICE_STOP_POST &&
1158 state != SERVICE_FINAL_SIGTERM &&
e537352b 1159 state != SERVICE_FINAL_SIGKILL) {
5e94833f 1160 service_unwatch_control_pid(s);
034c6ed7 1161 s->control_command = NULL;
a16e1123 1162 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
e537352b 1163 }
034c6ed7 1164
ceee3d82
LP		 1165 if (state == SERVICE_DEAD ||
1166 state == SERVICE_STOP ||
1167 state == SERVICE_STOP_SIGTERM ||
1168 state == SERVICE_STOP_SIGKILL ||
1169 state == SERVICE_STOP_POST ||
1170 state == SERVICE_FINAL_SIGTERM ||
1171 state == SERVICE_FINAL_SIGKILL ||
18c78fb1 1172 state == SERVICE_MAINTENANCE ||
ceee3d82 1173 state == SERVICE_AUTO_RESTART)
e537352b 1174 service_notify_sockets_dead(s);
ceee3d82 1175
4f2d528d
LP		 1176 if (state != SERVICE_START_PRE &&
1177 state != SERVICE_START &&
6cf6bbc2
LP		 1178 state != SERVICE_START_POST &&
1179 state != SERVICE_RUNNING &&
1180 state != SERVICE_RELOAD &&
1181 state != SERVICE_STOP &&
1182 state != SERVICE_STOP_SIGTERM &&
1183 state != SERVICE_STOP_SIGKILL &&
1184 state != SERVICE_STOP_POST &&
1185 state != SERVICE_FINAL_SIGTERM &&
1186 state != SERVICE_FINAL_SIGKILL &&
4cd1fbcc 1187 !(state == SERVICE_DEAD && s->meta.job)) {
4f2d528d 1188 service_close_socket_fd(s);
6cf6bbc2
LP		 1189 service_connection_unref(s);
1190 }
4f2d528d 1191
f6023656
LP		 1192 /* For the inactive states unit_notify() will trim the cgroup,
1193 * but for exit we have to do that ourselves... */
1194 if (state == SERVICE_EXITED)
1195 cgroup_bonding_trim_list(s->meta.cgroup_bondings, true);
1196
e537352b 1197 if (old_state != state)
4cd1fbcc 1198 log_debug("%s changed %s -> %s", s->meta.id, service_state_to_string(old_state), service_state_to_string(state));
acbb0225
LP		 1199
1200 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
034c6ed7
LP		 1201}
1202
a16e1123
LP		 1203static int service_coldplug(Unit *u) {
1204 Service *s = SERVICE(u);
1205 int r;
1206
1207 assert(s);
1208 assert(s->state == SERVICE_DEAD);
1209
1210 if (s->deserialized_state != s->state) {
1211
1212 if (s->deserialized_state == SERVICE_START_PRE ||
1213 s->deserialized_state == SERVICE_START ||
1214 s->deserialized_state == SERVICE_START_POST ||
1215 s->deserialized_state == SERVICE_RELOAD ||
1216 s->deserialized_state == SERVICE_STOP ||
1217 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1218 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1219 s->deserialized_state == SERVICE_STOP_POST ||
1220 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1221 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
e558336f
LP		 1222 s->deserialized_state == SERVICE_AUTO_RESTART) {
1223
1224 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1225 usec_t k;
1226
1227 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1228
1229 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1230 return r;
1231 }
1232 }
a16e1123
LP		 1233
1234 if ((s->deserialized_state == SERVICE_START &&
1235 (s->type == SERVICE_FORKING ||
8c47c732
LP		 1236 s->type == SERVICE_DBUS ||
1237 s->type == SERVICE_FINISH ||
1238 s->type == SERVICE_NOTIFY)) ||
a16e1123
LP		 1239 s->deserialized_state == SERVICE_START_POST ||
1240 s->deserialized_state == SERVICE_RUNNING ||
1241 s->deserialized_state == SERVICE_RELOAD ||
1242 s->deserialized_state == SERVICE_STOP ||
1243 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1244 s->deserialized_state == SERVICE_STOP_SIGKILL)
1245 if (s->main_pid > 0)
1246 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1247 return r;
1248
1249 if (s->deserialized_state == SERVICE_START_PRE ||
1250 s->deserialized_state == SERVICE_START ||
1251 s->deserialized_state == SERVICE_START_POST ||
1252 s->deserialized_state == SERVICE_RELOAD ||
1253 s->deserialized_state == SERVICE_STOP ||
1254 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1255 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1256 s->deserialized_state == SERVICE_STOP_POST ||
1257 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1258 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1259 if (s->control_pid > 0)
1260 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1261 return r;
1262
1263 service_set_state(s, s->deserialized_state);
1264 }
1265
1266 return 0;
1267}
1268
44d8db9e
LP		 1269static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1270 Iterator i;
1271 int r;
1272 int *rfds = NULL;
1273 unsigned rn_fds = 0;
3e33402a 1274 Set *set;
47be870b 1275 Socket *sock;
44d8db9e
LP		 1276
1277 assert(s);
1278 assert(fds);
1279 assert(n_fds);
1280
6cf6bbc2
LP		 1281 if (s->socket_fd >= 0)
1282 return 0;
1283
3e33402a
LP		 1284 if ((r = service_get_sockets(s, &set)) < 0)
1285 return r;
1286
47be870b 1287 SET_FOREACH(sock, set, i) {
44d8db9e
LP		 1288 int *cfds;
1289 unsigned cn_fds;
1290
47be870b 1291 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
44d8db9e
LP		 1292 goto fail;
1293
1294 if (!cfds)
1295 continue;
1296
1297 if (!rfds) {
1298 rfds = cfds;
1299 rn_fds = cn_fds;
1300 } else {
1301 int *t;
1302
1303 if (!(t = new(int, rn_fds+cn_fds))) {
1304 free(cfds);
1305 r = -ENOMEM;
1306 goto fail;
1307 }
1308
1309 memcpy(t, rfds, rn_fds);
1310 memcpy(t+rn_fds, cfds, cn_fds);
1311 free(rfds);
1312 free(cfds);
1313
1314 rfds = t;
1315 rn_fds = rn_fds+cn_fds;
1316 }
1317 }
1318
1319 *fds = rfds;
1320 *n_fds = rn_fds;
3e33402a
LP		 1321
1322 set_free(set);
1323
44d8db9e
LP		 1324 return 0;
1325
1326fail:
3e33402a 1327 set_free(set);
44d8db9e 1328 free(rfds);
3e33402a 1329
44d8db9e
LP		 1330 return r;
1331}
1332
81a2b7ce
LP		 1333static int service_spawn(
1334 Service *s,
1335 ExecCommand *c,
1336 bool timeout,
1337 bool pass_fds,
1338 bool apply_permissions,
1339 bool apply_chroot,
1e3ad081 1340 bool apply_tty_stdin,
c952c6ec 1341 bool set_notify_socket,
81a2b7ce
LP		 1342 pid_t *_pid) {
1343
034c6ed7
LP		 1344 pid_t pid;
1345 int r;
6cf6bbc2 1346 int *fds = NULL, *fdsbuf = NULL;
2105e76a
LP		 1347 unsigned n_fds = 0, n_env = 0;
1348 char **argv = NULL, **final_env = NULL, **our_env = NULL;
034c6ed7
LP		 1349
1350 assert(s);
1351 assert(c);
1352 assert(_pid);
1353
6cf6bbc2
LP		 1354 if (pass_fds ||
1355 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1356 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1357 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1358
4f2d528d
LP		 1359 if (s->socket_fd >= 0) {
1360 fds = &s->socket_fd;
1361 n_fds = 1;
6cf6bbc2
LP		 1362 } else {
1363 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1364 goto fail;
1365
1366 fds = fdsbuf;
1367 }
4f2d528d 1368 }
44d8db9e 1369
e558336f 1370 if (timeout && s->timeout_usec) {
acbb0225 1371 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1372 goto fail;
1373 } else
acbb0225 1374 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1375
9e2f7c11
LP		 1376 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1377 r = -ENOMEM;
1378 goto fail;
1379 }
1380
2105e76a
LP		 1381 if (!(our_env = new0(char*, 3))) {
1382 r = -ENOMEM;
1383 goto fail;
1384 }
c952c6ec 1385
2105e76a
LP		 1386 if (set_notify_socket)
1387 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=@%s", s->meta.manager->notify_socket) < 0) {
c952c6ec
LP		 1388 r = -ENOMEM;
1389 goto fail;
1390 }
1391
2105e76a
LP		 1392 if (s->main_pid > 0)
1393 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
c952c6ec
LP		 1394 r = -ENOMEM;
1395 goto fail;
1396 }
2105e76a
LP		 1397
1398 if (!(final_env = strv_env_merge(2,
1399 s->meta.manager->environment,
1400 our_env,
1401 NULL))) {
1402 r = -ENOMEM;
1403 goto fail;
1404 }
c952c6ec 1405
9e2f7c11
LP		 1406 r = exec_spawn(c,
1407 argv,
1408 &s->exec_context,
1409 fds, n_fds,
2105e76a 1410 final_env,
9e2f7c11
LP		 1411 apply_permissions,
1412 apply_chroot,
1e3ad081 1413 apply_tty_stdin,
4cd1fbcc
LP		 1414 s->meta.manager->confirm_spawn,
1415 s->meta.cgroup_bondings,
9e2f7c11
LP		 1416 &pid);
1417
9e2f7c11 1418 if (r < 0)
034c6ed7
LP		 1419 goto fail;
1420
4f2d528d 1421
87f0e418 1422 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
034c6ed7
LP		 1423 /* FIXME: we need to do something here */
1424 goto fail;
1425
2105e76a
LP		 1426 free(fdsbuf);
1427 strv_free(argv);
1428 strv_free(our_env);
1429 strv_free(final_env);
1430
034c6ed7
LP		 1431 *_pid = pid;
1432
5cb5a6ff 1433 return 0;
034c6ed7
LP		 1434
1435fail:
2105e76a 1436 free(fdsbuf);
c952c6ec 1437 strv_free(argv);
2105e76a
LP		 1438 strv_free(our_env);
1439 strv_free(final_env);
c952c6ec 1440
034c6ed7 1441 if (timeout)
acbb0225 1442 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7
LP		 1443
1444 return r;
1445}
1446
80876c20
LP		 1447static int main_pid_good(Service *s) {
1448 assert(s);
1449
1450 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1451 * don't know */
1452
1453 /* If we know the pid file, then lets just check if it is
1454 * still valid */
1455 if (s->main_pid_known)
1456 return s->main_pid > 0;
1457
1458 /* We don't know the pid */
1459 return -EAGAIN;
1460}
1461
1462static int control_pid_good(Service *s) {
1463 assert(s);
1464
1465 return s->control_pid > 0;
1466}
1467
1468static int cgroup_good(Service *s) {
1469 int r;
1470
1471 assert(s);
1472
4cd1fbcc 1473 if ((r = cgroup_bonding_is_empty_list(s->meta.cgroup_bondings)) < 0)
80876c20
LP		 1474 return r;
1475
1476 return !r;
1477}
1478
034c6ed7
LP		 1479static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1480 int r;
1481 assert(s);
1482
1483 if (!success)
1484 s->failure = true;
1485
1486 if (allow_restart &&
3a762661 1487 s->allow_restart &&
034c6ed7
LP		 1488 (s->restart == SERVICE_RESTART_ALWAYS ||
1489 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1490
acbb0225 1491 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1492 goto fail;
1493
1494 service_set_state(s, SERVICE_AUTO_RESTART);
1495 } else
18c78fb1 1496 service_set_state(s, s->failure ? SERVICE_MAINTENANCE : SERVICE_DEAD);
034c6ed7
LP		 1497
1498 return;
1499
1500fail:
4cd1fbcc 1501 log_warning("%s failed to run install restart timer: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1502 service_enter_dead(s, false, false);
1503}
1504
1505static void service_enter_signal(Service *s, ServiceState state, bool success);
1506
1507static void service_enter_stop_post(Service *s, bool success) {
1508 int r;
1509 assert(s);
1510
1511 if (!success)
1512 s->failure = true;
1513
5e94833f
LP		 1514 service_unwatch_control_pid(s);
1515
a16e1123 1516 s->control_command_id = SERVICE_EXEC_STOP_POST;
80876c20 1517 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
81a2b7ce
LP		 1518 if ((r = service_spawn(s,
1519 s->control_command,
1520 true,
1521 false,
1522 !s->permissions_start_only,
1523 !s->root_directory_start_only,
1e3ad081 1524 true,
c952c6ec 1525 false,
81a2b7ce 1526 &s->control_pid)) < 0)
034c6ed7
LP		 1527 goto fail;
1528
d6ea93e3 1529
80876c20
LP		 1530 service_set_state(s, SERVICE_STOP_POST);
1531 } else
1532 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
034c6ed7
LP		 1533
1534 return;
1535
1536fail:
4cd1fbcc 1537 log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1538 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1539}
1540
1541static void service_enter_signal(Service *s, ServiceState state, bool success) {
1542 int r;
1543 bool sent = false;
1544
1545 assert(s);
1546
1547 if (!success)
1548 s->failure = true;
1549
2e22afe9
LP		 1550 if (s->exec_context.kill_mode != KILL_NONE) {
1551 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
034c6ed7 1552
2e22afe9 1553 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
034c6ed7 1554
4cd1fbcc 1555 if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig)) < 0) {
50159e6a
LP		 1556 if (r != -EAGAIN && r != -ESRCH)
1557 goto fail;
1558 } else
034c6ed7
LP		 1559 sent = true;
1560 }
1561
50159e6a
LP		 1562 if (!sent) {
1563 r = 0;
80876c20 1564
50159e6a 1565 if (s->main_pid > 0) {
2e22afe9 1566 if (kill(s->exec_context.kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
50159e6a
LP		 1567 r = -errno;
1568 else
1569 sent = true;
1570 }
1571
1572 if (s->control_pid > 0) {
2e22afe9 1573 if (kill(s->exec_context.kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
50159e6a
LP		 1574 r = -errno;
1575 else
1576 sent = true;
1577 }
1578
1579 if (r < 0)
1580 goto fail;
1581 }
d6ea93e3 1582 }
034c6ed7 1583
e93bc5a6 1584 if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
e558336f
LP		 1585 if (s->timeout_usec > 0)
1586 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1587 goto fail;
d6ea93e3 1588
80876c20
LP		 1589 service_set_state(s, state);
1590 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1591 service_enter_stop_post(s, true);
1592 else
034c6ed7
LP		 1593 service_enter_dead(s, true, true);
1594
1595 return;
1596
1597fail:
4cd1fbcc 1598 log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
034c6ed7 1599
80876c20 1600 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
034c6ed7
LP		 1601 service_enter_stop_post(s, false);
1602 else
1603 service_enter_dead(s, false, true);
1604}
1605
1606static void service_enter_stop(Service *s, bool success) {
1607 int r;
5925dd3c 1608
034c6ed7
LP		 1609 assert(s);
1610
1611 if (!success)
1612 s->failure = true;
1613
5e94833f
LP		 1614 service_unwatch_control_pid(s);
1615
a16e1123 1616 s->control_command_id = SERVICE_EXEC_STOP;
80876c20 1617 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
81a2b7ce
LP		 1618 if ((r = service_spawn(s,
1619 s->control_command,
1620 true,
1621 false,
1622 !s->permissions_start_only,
1623 !s->root_directory_start_only,
c952c6ec 1624 false,
1e3ad081 1625 false,
e55224ca 1626 &s->control_pid)) < 0)
034c6ed7
LP		 1627 goto fail;
1628
80876c20
LP		 1629 service_set_state(s, SERVICE_STOP);
1630 } else
034c6ed7
LP		 1631 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1632
1633 return;
1634
1635fail:
4cd1fbcc 1636 log_warning("%s failed to run 'stop' task: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1637 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1638}
1639
80876c20 1640static void service_enter_running(Service *s, bool success) {
4eab639f 1641 int main_pid_ok, cgroup_ok;
80876c20
LP		 1642 assert(s);
1643
1644 if (!success)
1645 s->failure = true;
1646
4eab639f
LP		 1647 main_pid_ok = main_pid_good(s);
1648 cgroup_ok = cgroup_good(s);
1649
1650 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
05e343b7 1651 (s->bus_name_good || s->type != SERVICE_DBUS))
80876c20
LP		 1652 service_set_state(s, SERVICE_RUNNING);
1653 else if (s->valid_no_process)
1654 service_set_state(s, SERVICE_EXITED);
1655 else
1656 service_enter_stop(s, true);
1657}
1658
034c6ed7
LP		 1659static void service_enter_start_post(Service *s) {
1660 int r;
1661 assert(s);
1662
5e94833f
LP		 1663 service_unwatch_control_pid(s);
1664
a16e1123 1665 s->control_command_id = SERVICE_EXEC_START_POST;
80876c20 1666 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
81a2b7ce
LP		 1667 if ((r = service_spawn(s,
1668 s->control_command,
1669 true,
1670 false,
1671 !s->permissions_start_only,
1672 !s->root_directory_start_only,
c952c6ec 1673 false,
1e3ad081 1674 false,
e55224ca 1675 &s->control_pid)) < 0)
034c6ed7
LP		 1676 goto fail;
1677
80876c20
LP		 1678 service_set_state(s, SERVICE_START_POST);
1679 } else
1680 service_enter_running(s, true);
034c6ed7
LP		 1681
1682 return;
1683
1684fail:
4cd1fbcc 1685 log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1686 service_enter_stop(s, false);
1687}
1688
1689static void service_enter_start(Service *s) {
1690 pid_t pid;
1691 int r;
1692
1693 assert(s);
1694
1695 assert(s->exec_command[SERVICE_EXEC_START]);
1696 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1697
80876c20
LP		 1698 if (s->type == SERVICE_FORKING)
1699 service_unwatch_control_pid(s);
1700 else
1701 service_unwatch_main_pid(s);
1702
81a2b7ce
LP		 1703 if ((r = service_spawn(s,
1704 s->exec_command[SERVICE_EXEC_START],
8c47c732 1705 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
81a2b7ce
LP		 1706 true,
1707 true,
1708 true,
1e3ad081 1709 true,
c952c6ec 1710 s->notify_access != NOTIFY_NONE,
81a2b7ce 1711 &pid)) < 0)
034c6ed7
LP		 1712 goto fail;
1713
1714 if (s->type == SERVICE_SIMPLE) {
1715 /* For simple services we immediately start
1716 * the START_POST binaries. */
1717
5925dd3c 1718 service_set_main_pid(s, pid);
034c6ed7
LP		 1719 service_enter_start_post(s);
1720
1721 } else if (s->type == SERVICE_FORKING) {
1722
1723 /* For forking services we wait until the start
1724 * process exited. */
1725
a16e1123 1726 s->control_command_id = SERVICE_EXEC_START;
034c6ed7 1727 s->control_command = s->exec_command[SERVICE_EXEC_START];
5925dd3c 1728
e55224ca 1729 s->control_pid = pid;
80876c20
LP		 1730 service_set_state(s, SERVICE_START);
1731
05e343b7 1732 } else if (s->type == SERVICE_FINISH ||
8c47c732
LP		 1733 s->type == SERVICE_DBUS ||
1734 s->type == SERVICE_NOTIFY) {
7d55e835
LP		 1735
1736 /* For finishing services we wait until the start
1737 * process exited, too, but it is our main process. */
1738
05e343b7 1739 /* For D-Bus services we know the main pid right away,
8c47c732
LP		 1740 * but wait for the bus name to appear on the
1741 * bus. Notify services are similar. */
05e343b7 1742
5925dd3c 1743 service_set_main_pid(s, pid);
80876c20 1744 service_set_state(s, SERVICE_START);
034c6ed7
LP		 1745 } else
1746 assert_not_reached("Unknown service type");
1747
1748 return;
1749
1750fail:
4cd1fbcc 1751 log_warning("%s failed to run 'start' task: %s", s->meta.id, strerror(-r));
80876c20 1752 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 1753}
1754
1755static void service_enter_start_pre(Service *s) {
1756 int r;
1757
1758 assert(s);
1759
5e94833f
LP		 1760 service_unwatch_control_pid(s);
1761
a16e1123 1762 s->control_command_id = SERVICE_EXEC_START_PRE;
80876c20 1763 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
81a2b7ce
LP		 1764 if ((r = service_spawn(s,
1765 s->control_command,
1766 true,
1767 false,
1768 !s->permissions_start_only,
1769 !s->root_directory_start_only,
1e3ad081 1770 true,
c952c6ec 1771 false,
e55224ca 1772 &s->control_pid)) < 0)
034c6ed7
LP		 1773 goto fail;
1774
80876c20
LP		 1775 service_set_state(s, SERVICE_START_PRE);
1776 } else
034c6ed7
LP		 1777 service_enter_start(s);
1778
1779 return;
1780
1781fail:
4cd1fbcc 1782 log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1783 service_enter_dead(s, false, true);
1784}
1785
1786static void service_enter_restart(Service *s) {
1787 int r;
398ef8ba
LP		 1788 DBusError error;
1789
034c6ed7 1790 assert(s);
398ef8ba 1791 dbus_error_init(&error);
034c6ed7 1792
9ea9a0c8
LP		 1793 service_enter_dead(s, true, false);
1794
398ef8ba 1795 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL, NULL)) < 0)
034c6ed7
LP		 1796 goto fail;
1797
4cd1fbcc 1798 log_debug("%s scheduled restart job.", s->meta.id);
034c6ed7
LP		 1799 return;
1800
1801fail:
398ef8ba 1802 log_warning("%s failed to schedule restart job: %s", s->meta.id, bus_error(&error, -r));
034c6ed7 1803 service_enter_dead(s, false, false);
398ef8ba
LP		 1804
1805 dbus_error_free(&error);
034c6ed7
LP		 1806}
1807
1808static void service_enter_reload(Service *s) {
1809 int r;
1810
1811 assert(s);
1812
5e94833f
LP		 1813 service_unwatch_control_pid(s);
1814
a16e1123 1815 s->control_command_id = SERVICE_EXEC_RELOAD;
80876c20 1816 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
81a2b7ce
LP		 1817 if ((r = service_spawn(s,
1818 s->control_command,
1819 true,
1820 false,
1821 !s->permissions_start_only,
1822 !s->root_directory_start_only,
c952c6ec 1823 false,
1e3ad081 1824 false,
e55224ca 1825 &s->control_pid)) < 0)
034c6ed7
LP		 1826 goto fail;
1827
80876c20
LP		 1828 service_set_state(s, SERVICE_RELOAD);
1829 } else
1830 service_enter_running(s, true);
034c6ed7
LP		 1831
1832 return;
1833
1834fail:
4cd1fbcc 1835 log_warning("%s failed to run 'reload' task: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1836 service_enter_stop(s, false);
1837}
1838
1839static void service_run_next(Service *s, bool success) {
1840 int r;
1841
1842 assert(s);
1843 assert(s->control_command);
1844 assert(s->control_command->command_next);
1845
1846 if (!success)
1847 s->failure = true;
1848
1849 s->control_command = s->control_command->command_next;
1850
5e94833f
LP		 1851 service_unwatch_control_pid(s);
1852
81a2b7ce
LP		 1853 if ((r = service_spawn(s,
1854 s->control_command,
1855 true,
1856 false,
1857 !s->permissions_start_only,
1858 !s->root_directory_start_only,
5830833f
LP		 1859 s->control_command_id == SERVICE_EXEC_START_PRE ||
1860 s->control_command_id == SERVICE_EXEC_STOP_POST,
1e3ad081 1861 false,
e55224ca 1862 &s->control_pid)) < 0)
034c6ed7
LP		 1863 goto fail;
1864
1865 return;
1866
1867fail:
4cd1fbcc 1868 log_warning("%s failed to run next task: %s", s->meta.id, strerror(-r));
034c6ed7 1869
80876c20
LP		 1870 if (s->state == SERVICE_START_PRE)
1871 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1872 else if (s->state == SERVICE_STOP)
1873 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
034c6ed7
LP		 1874 else if (s->state == SERVICE_STOP_POST)
1875 service_enter_dead(s, false, true);
1876 else
1877 service_enter_stop(s, false);
5cb5a6ff
LP		 1878}
1879
87f0e418
LP		 1880static int service_start(Unit *u) {
1881 Service *s = SERVICE(u);
5cb5a6ff
LP		 1882
1883 assert(s);
1884
034c6ed7
LP		 1885 /* We cannot fulfill this request right now, try again later
1886 * please! */
1887 if (s->state == SERVICE_STOP ||
1888 s->state == SERVICE_STOP_SIGTERM ||
1889 s->state == SERVICE_STOP_SIGKILL ||
1890 s->state == SERVICE_STOP_POST ||
1891 s->state == SERVICE_FINAL_SIGTERM ||
1892 s->state == SERVICE_FINAL_SIGKILL)
5cb5a6ff
LP		 1893 return -EAGAIN;
1894
034c6ed7
LP		 1895 /* Already on it! */
1896 if (s->state == SERVICE_START_PRE ||
1897 s->state == SERVICE_START ||
1898 s->state == SERVICE_START_POST)
1899 return 0;
1900
18c78fb1 1901 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTENANCE || s->state == SERVICE_AUTO_RESTART);
5cb5a6ff 1902
1e2e8133
LP		 1903 /* Make sure we don't enter a busy loop of some kind. */
1904 if (!ratelimit_test(&s->ratelimit)) {
9e2f7c11 1905 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
d5159713 1906 return -ECANCELED;
1e2e8133
LP		 1907 }
1908
cac6f7c8
LP		 1909 if ((s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1910 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1911 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) &&
1912 s->socket_fd < 0) {
1913 log_warning("%s can only be started with a per-connection socket.", u->meta.id);
1914 return -EINVAL;
1915 }
1916
034c6ed7
LP		 1917 s->failure = false;
1918 s->main_pid_known = false;
3a762661 1919 s->allow_restart = true;
034c6ed7
LP		 1920
1921 service_enter_start_pre(s);
1922 return 0;
5cb5a6ff
LP		 1923}
1924
87f0e418
LP		 1925static int service_stop(Unit *u) {
1926 Service *s = SERVICE(u);
5cb5a6ff
LP		 1927
1928 assert(s);
1929
3f6c78dc
LP		 1930 /* This is a user request, so don't do restarts on this
1931 * shutdown. */
1932 s->allow_restart = false;
034c6ed7 1933
e537352b
LP		 1934 /* Already on it */
1935 if (s->state == SERVICE_STOP ||
1936 s->state == SERVICE_STOP_SIGTERM ||
1937 s->state == SERVICE_STOP_SIGKILL ||
1938 s->state == SERVICE_STOP_POST ||
1939 s->state == SERVICE_FINAL_SIGTERM ||
1940 s->state == SERVICE_FINAL_SIGKILL)
1941 return 0;
1942
3f6c78dc 1943 /* Don't allow a restart */
034c6ed7
LP		 1944 if (s->state == SERVICE_AUTO_RESTART) {
1945 service_set_state(s, SERVICE_DEAD);
1946 return 0;
1947 }
1948
3f6c78dc
LP		 1949 /* If there's already something running we go directly into
1950 * kill mode. */
1951 if (s->state == SERVICE_START_PRE ||
1952 s->state == SERVICE_START ||
1953 s->state == SERVICE_START_POST ||
1954 s->state == SERVICE_RELOAD) {
1955 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1956 return 0;
1957 }
5cb5a6ff 1958
3f6c78dc
LP		 1959 assert(s->state == SERVICE_RUNNING ||
1960 s->state == SERVICE_EXITED);
3a762661 1961
034c6ed7 1962 service_enter_stop(s, true);
5cb5a6ff
LP		 1963 return 0;
1964}
1965
87f0e418
LP		 1966static int service_reload(Unit *u) {
1967 Service *s = SERVICE(u);
034c6ed7
LP		 1968
1969 assert(s);
1970
80876c20 1971 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
034c6ed7
LP		 1972
1973 service_enter_reload(s);
5cb5a6ff
LP		 1974 return 0;
1975}
1976
87f0e418
LP		 1977static bool service_can_reload(Unit *u) {
1978 Service *s = SERVICE(u);
034c6ed7
LP		 1979
1980 assert(s);
1981
1982 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1983}
1984
a16e1123
LP		 1985static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
1986 Service *s = SERVICE(u);
1987
1988 assert(u);
1989 assert(f);
1990 assert(fds);
1991
1992 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
1993 unit_serialize_item(u, f, "failure", yes_no(s->failure));
1994
1995 if (s->control_pid > 0)
5925dd3c 1996 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
a16e1123 1997
5925dd3c
LP		 1998 if (s->main_pid_known && s->main_pid > 0)
1999 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
a16e1123
LP		 2000
2001 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2002
3a2776bc
LP		 2003 if (s->status_text)
2004 unit_serialize_item(u, f, "status-text", s->status_text);
2005
a16e1123
LP		 2006 /* There's a minor uncleanliness here: if there are multiple
2007 * commands attached here, we will start from the first one
2008 * again */
2009 if (s->control_command_id >= 0)
825636e5 2010 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
a16e1123
LP		 2011
2012 if (s->socket_fd >= 0) {
2013 int copy;
2014
2015 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2016 return copy;
2017
2018 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2019 }
2020
ecdbca40
LP		 2021 if (s->main_exec_status.pid > 0) {
2022 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2023
2024 if (s->main_exec_status.start_timestamp.realtime > 0) {
2025 unit_serialize_item_format(u, f, "main-exec-status-start-realtime",
2026 "%llu", (unsigned long long) s->main_exec_status.start_timestamp.realtime);
2027
2028 unit_serialize_item_format(u, f, "main-exec-status-start-monotonic",
2029 "%llu", (unsigned long long) s->main_exec_status.start_timestamp.monotonic);
2030 }
2031
2032 if (s->main_exec_status.exit_timestamp.realtime > 0) {
2033 unit_serialize_item_format(u, f, "main-exec-status-exit-realtime",
2034 "%llu", (unsigned long long) s->main_exec_status.exit_timestamp.realtime);
2035 unit_serialize_item_format(u, f, "main-exec-status-exit-monotonic",
2036 "%llu", (unsigned long long) s->main_exec_status.exit_timestamp.monotonic);
2037
2038 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2039 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2040 }
2041 }
2042
a16e1123
LP		 2043 return 0;
2044}
2045
2046static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2047 Service *s = SERVICE(u);
2048 int r;
2049
2050 assert(u);
2051 assert(key);
2052 assert(value);
2053 assert(fds);
2054
2055 if (streq(key, "state")) {
2056 ServiceState state;
2057
2058 if ((state = service_state_from_string(value)) < 0)
2059 log_debug("Failed to parse state value %s", value);
2060 else
2061 s->deserialized_state = state;
2062 } else if (streq(key, "failure")) {
2063 int b;
2064
2065 if ((b = parse_boolean(value)) < 0)
2066 log_debug("Failed to parse failure value %s", value);
2067 else
2068 s->failure = b || s->failure;
2069 } else if (streq(key, "control-pid")) {
5925dd3c 2070 pid_t pid;
a16e1123 2071
5925dd3c 2072 if ((r = parse_pid(value, &pid)) < 0)
a16e1123
LP		 2073 log_debug("Failed to parse control-pid value %s", value);
2074 else
e55224ca 2075 s->control_pid = pid;
a16e1123 2076 } else if (streq(key, "main-pid")) {
5925dd3c 2077 pid_t pid;
a16e1123 2078
5925dd3c 2079 if ((r = parse_pid(value, &pid)) < 0)
a16e1123
LP		 2080 log_debug("Failed to parse main-pid value %s", value);
2081 else
5925dd3c 2082 service_set_main_pid(s, (pid_t) pid);
a16e1123
LP		 2083 } else if (streq(key, "main-pid-known")) {
2084 int b;
2085
2086 if ((b = parse_boolean(value)) < 0)
2087 log_debug("Failed to parse main-pid-known value %s", value);
2088 else
2089 s->main_pid_known = b;
3a2776bc
LP		 2090 } else if (streq(key, "status-text")) {
2091 char *t;
2092
2093 if ((t = strdup(value))) {
2094 free(s->status_text);
2095 s->status_text = t;
2096 }
2097
a16e1123
LP		 2098 } else if (streq(key, "control-command")) {
2099 ServiceExecCommand id;
2100
2101 if ((id = service_exec_command_from_string(value)) < 0)
2102 log_debug("Failed to parse exec-command value %s", value);
2103 else {
2104 s->control_command_id = id;
2105 s->control_command = s->exec_command[id];
2106 }
2107 } else if (streq(key, "socket-fd")) {
2108 int fd;
2109
2110 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2111 log_debug("Failed to parse socket-fd value %s", value);
2112 else {
2113
2114 if (s->socket_fd >= 0)
2115 close_nointr_nofail(s->socket_fd);
2116 s->socket_fd = fdset_remove(fds, fd);
2117 }
ecdbca40
LP		 2118 } else if (streq(key, "main-exec-status-pid")) {
2119 pid_t pid;
2120
2121 if ((r = parse_pid(value, &pid)) < 0)
2122 log_debug("Failed to parse main-exec-status-pid value %s", value);
2123 else
2124 s->main_exec_status.pid = pid;
2125 } else if (streq(key, "main-exec-status-code")) {
2126 int i;
2127
2128 if ((r = safe_atoi(value, &i)) < 0)
2129 log_debug("Failed to parse main-exec-status-code value %s", value);
2130 else
2131 s->main_exec_status.code = i;
2132 } else if (streq(key, "main-exec-status-status")) {
2133 int i;
2134
2135 if ((r = safe_atoi(value, &i)) < 0)
2136 log_debug("Failed to parse main-exec-status-status value %s", value);
2137 else
2138 s->main_exec_status.status = i;
2139 } else if (streq(key, "main-exec-status-start-realtime")) {
2140 uint64_t k;
2141
af2ab1f9 2142 if ((r = safe_atou64(value, &k)) < 0)
ecdbca40
LP		 2143 log_debug("Failed to parse main-exec-status-start-realtime value %s", value);
2144 else
2145 s->main_exec_status.start_timestamp.realtime = (usec_t) k;
2146 } else if (streq(key, "main-exec-status-start-monotonic")) {
2147 uint64_t k;
2148
af2ab1f9 2149 if ((r = safe_atou64(value, &k)) < 0)
ecdbca40
LP		 2150 log_debug("Failed to parse main-exec-status-start-monotonic value %s", value);
2151 else
2152 s->main_exec_status.start_timestamp.monotonic = (usec_t) k;
2153 } else if (streq(key, "main-exec-status-exit-realtime")) {
2154 uint64_t k;
2155
af2ab1f9 2156 if ((r = safe_atou64(value, &k)) < 0)
ecdbca40
LP		 2157 log_debug("Failed to parse main-exec-status-exit-realtime value %s", value);
2158 else
2159 s->main_exec_status.exit_timestamp.realtime = (usec_t) k;
2160 } else if (streq(key, "main-exec-status-exit-monotonic")) {
2161 uint64_t k;
2162
af2ab1f9 2163 if ((r = safe_atou64(value, &k)) < 0)
ecdbca40
LP		 2164 log_debug("Failed to parse main-exec-status-exit-monotonic value %s", value);
2165 else
2166 s->main_exec_status.exit_timestamp.monotonic = (usec_t) k;
a16e1123
LP		 2167 } else
2168 log_debug("Unknown serialization key '%s'", key);
2169
2170 return 0;
2171}
2172
87f0e418
LP		 2173static UnitActiveState service_active_state(Unit *u) {
2174 assert(u);
5cb5a6ff 2175
acbb0225 2176 return state_translation_table[SERVICE(u)->state];
034c6ed7
LP		 2177}
2178
10a94420
LP		 2179static const char *service_sub_state_to_string(Unit *u) {
2180 assert(u);
2181
2182 return service_state_to_string(SERVICE(u)->state);
2183}
2184
701cc384
LP		 2185static bool service_check_gc(Unit *u) {
2186 Service *s = SERVICE(u);
2187
2188 assert(s);
2189
2190 return !!s->sysv_path;
2191}
2192
2193static bool service_check_snapshot(Unit *u) {
2194 Service *s = SERVICE(u);
2195
2196 assert(s);
2197
2198 return !s->got_socket_fd;
2199}
2200
87f0e418
LP		 2201static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2202 Service *s = SERVICE(u);
034c6ed7 2203 bool success;
5cb5a6ff
LP		 2204
2205 assert(s);
034c6ed7
LP		 2206 assert(pid >= 0);
2207
cb8a8f78 2208 success = is_clean_exit(code, status);
034c6ed7
LP		 2209
2210 if (s->main_pid == pid) {
2211
b58b4116 2212 exec_status_exit(&s->main_exec_status, pid, code, status);
034c6ed7
LP		 2213 s->main_pid = 0;
2214
8c47c732 2215 if (s->type != SERVICE_FORKING) {
034c6ed7
LP		 2216 assert(s->exec_command[SERVICE_EXEC_START]);
2217 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
b708e7ce
LP		 2218
2219 if (s->exec_command[SERVICE_EXEC_START]->ignore)
2220 success = true;
034c6ed7
LP		 2221 }
2222
92abbefb
LP		 2223 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2224 "%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
b708e7ce 2225 s->failure = s->failure || !success;
034c6ed7
LP		 2226
2227 /* The service exited, so the service is officially
2228 * gone. */
2229
2230 switch (s->state) {
2231
2232 case SERVICE_START_POST:
2233 case SERVICE_RELOAD:
2234 case SERVICE_STOP:
2235 /* Need to wait until the operation is
2236 * done */
2237 break;
2238
7d55e835 2239 case SERVICE_START:
c4653a4d
LP		 2240 if (s->type == SERVICE_FINISH) {
2241 /* This was our main goal, so let's go on */
2242 if (success)
2243 service_enter_start_post(s);
2244 else
2245 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2246 break;
2247 } else {
8c47c732 2248 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
7d55e835 2249
c4653a4d
LP		 2250 /* Fall through */
2251 }
7d55e835 2252
034c6ed7 2253 case SERVICE_RUNNING:
80876c20 2254 service_enter_running(s, success);
034c6ed7
LP		 2255 break;
2256
2257 case SERVICE_STOP_SIGTERM:
2258 case SERVICE_STOP_SIGKILL:
2259
2260 if (!control_pid_good(s))
2261 service_enter_stop_post(s, success);
5cb5a6ff 2262
034c6ed7
LP		 2263 /* If there is still a control process, wait for that first */
2264 break;
5cb5a6ff 2265
034c6ed7
LP		 2266 default:
2267 assert_not_reached("Uh, main process died at wrong time.");
2268 }
5cb5a6ff 2269
034c6ed7 2270 } else if (s->control_pid == pid) {
034c6ed7 2271
b708e7ce 2272 if (s->control_command) {
b58b4116 2273 exec_status_exit(&s->control_command->exec_status, pid, code, status);
a16e1123 2274
b708e7ce
LP		 2275 if (s->control_command->ignore)
2276 success = true;
2277 }
2278
034c6ed7
LP		 2279 s->control_pid = 0;
2280
92abbefb
LP		 2281 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2282 "%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
b708e7ce 2283 s->failure = s->failure || !success;
034c6ed7
LP		 2284
2285 /* If we are shutting things down anyway we
2286 * don't care about failing commands. */
2287
a16e1123 2288 if (s->control_command && s->control_command->command_next && success) {
034c6ed7
LP		 2289
2290 /* There is another command to *
2291 * execute, so let's do that. */
2292
9e2f7c11 2293 log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state));
034c6ed7
LP		 2294 service_run_next(s, success);
2295
80876c20 2296 } else {
034c6ed7
LP		 2297 /* No further commands for this step, so let's
2298 * figure out what to do next */
2299
a16e1123
LP		 2300 s->control_command = NULL;
2301 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2302
9e2f7c11 2303 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
bd982a8b 2304
034c6ed7
LP		 2305 switch (s->state) {
2306
2307 case SERVICE_START_PRE:
2308 if (success)
2309 service_enter_start(s);
2310 else
80876c20 2311 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 2312 break;
2313
2314 case SERVICE_START:
2315 assert(s->type == SERVICE_FORKING);
2316
2317 /* Let's try to load the pid
2318 * file here if we can. We
2319 * ignore the return value,
2320 * since the PID file might
2321 * actually be created by a
2322 * START_POST script */
2323
2324 if (success) {
2325 if (s->pid_file)
2326 service_load_pid_file(s);
2327
2328 service_enter_start_post(s);
2329 } else
80876c20 2330 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 2331
2332 break;
2333
2334 case SERVICE_START_POST:
2335 if (success && s->pid_file && !s->main_pid_known) {
2336 int r;
2337
2338 /* Hmm, let's see if we can
2339 * load the pid now after the
2340 * start-post scripts got
2341 * executed. */
2342
2343 if ((r = service_load_pid_file(s)) < 0)
4cd1fbcc 2344 log_warning("%s: failed to load PID file %s: %s", s->meta.id, s->pid_file, strerror(-r));
034c6ed7
LP		 2345 }
2346
2347 /* Fall through */
2348
2349 case SERVICE_RELOAD:
80876c20
LP		 2350 if (success)
2351 service_enter_running(s, true);
2352 else
034c6ed7
LP		 2353 service_enter_stop(s, false);
2354
2355 break;
2356
2357 case SERVICE_STOP:
80876c20 2358 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
034c6ed7
LP		 2359 break;
2360
2361 case SERVICE_STOP_SIGTERM:
2362 case SERVICE_STOP_SIGKILL:
2363 if (main_pid_good(s) <= 0)
2364 service_enter_stop_post(s, success);
2365
2366 /* If there is still a service
2367 * process around, wait until
2368 * that one quit, too */
2369 break;
2370
2371 case SERVICE_STOP_POST:
2372 case SERVICE_FINAL_SIGTERM:
2373 case SERVICE_FINAL_SIGKILL:
2374 service_enter_dead(s, success, true);
2375 break;
2376
2377 default:
2378 assert_not_reached("Uh, control process died at wrong time.");
2379 }
2380 }
8c47c732 2381 }
034c6ed7
LP		 2382}
2383
acbb0225 2384static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
87f0e418 2385 Service *s = SERVICE(u);
034c6ed7
LP		 2386
2387 assert(s);
2388 assert(elapsed == 1);
2389
acbb0225 2390 assert(w == &s->timer_watch);
034c6ed7
LP		 2391
2392 switch (s->state) {
2393
2394 case SERVICE_START_PRE:
2395 case SERVICE_START:
9e2f7c11 2396 log_warning("%s operation timed out. Terminating.", u->meta.id);
80876c20
LP		 2397 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2398 break;
2399
034c6ed7
LP		 2400 case SERVICE_START_POST:
2401 case SERVICE_RELOAD:
9e2f7c11 2402 log_warning("%s operation timed out. Stopping.", u->meta.id);
034c6ed7
LP		 2403 service_enter_stop(s, false);
2404 break;
2405
2406 case SERVICE_STOP:
9e2f7c11 2407 log_warning("%s stopping timed out. Terminating.", u->meta.id);
034c6ed7
LP		 2408 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2409 break;
2410
2411 case SERVICE_STOP_SIGTERM:
9e2f7c11 2412 log_warning("%s stopping timed out. Killing.", u->meta.id);
034c6ed7
LP		 2413 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2414 break;
2415
2416 case SERVICE_STOP_SIGKILL:
2417 /* Uh, wie sent a SIGKILL and it is still not gone?
2418 * Must be something we cannot kill, so let's just be
2419 * weirded out and continue */
2420
9e2f7c11 2421 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
034c6ed7
LP		 2422 service_enter_stop_post(s, false);
2423 break;
2424
2425 case SERVICE_STOP_POST:
9e2f7c11 2426 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
034c6ed7
LP		 2427 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2428 break;
2429
2430 case SERVICE_FINAL_SIGTERM:
9e2f7c11 2431 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
034c6ed7
LP		 2432 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2433 break;
2434
2435 case SERVICE_FINAL_SIGKILL:
18c78fb1 2436 log_warning("%s still around after SIGKILL (2). Entering maintenance mode.", u->meta.id);
034c6ed7
LP		 2437 service_enter_dead(s, false, true);
2438 break;
2439
2440 case SERVICE_AUTO_RESTART:
54165a39 2441 log_info("%s holdoff time over, scheduling restart.", u->meta.id);
034c6ed7
LP		 2442 service_enter_restart(s);
2443 break;
2444
2445 default:
2446 assert_not_reached("Timeout at wrong time.");
2447 }
5cb5a6ff
LP		 2448}
2449
8e274523
LP		 2450static void service_cgroup_notify_event(Unit *u) {
2451 Service *s = SERVICE(u);
2452
2453 assert(u);
2454
9e2f7c11 2455 log_debug("%s: cgroup is empty", u->meta.id);
8e274523
LP		 2456
2457 switch (s->state) {
2458
2459 /* Waiting for SIGCHLD is usually more interesting,
2460 * because it includes return codes/signals. Which is
2461 * why we ignore the cgroup events for most cases,
2462 * except when we don't know pid which to expect the
2463 * SIGCHLD for. */
2464
2465 case SERVICE_RUNNING:
80876c20 2466 service_enter_running(s, true);
8e274523
LP		 2467 break;
2468
2469 default:
2470 ;
2471 }
2472}
2473
c952c6ec 2474static void service_notify_message(Unit *u, pid_t pid, char **tags) {
8c47c732
LP		 2475 Service *s = SERVICE(u);
2476 const char *e;
2477
2478 assert(u);
2479
c952c6ec
LP		 2480 if (s->notify_access == NOTIFY_NONE) {
2481 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
2482 u->meta.id, (unsigned long) pid);
2483 return;
2484 }
2485
2486 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
2487 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
2488 u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid);
2489 return;
2490 }
2491
8c47c732
LP		 2492 log_debug("%s: Got message", u->meta.id);
2493
2494 /* Interpret MAINPID= */
2495 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
2496 (s->state == SERVICE_START ||
2497 s->state == SERVICE_START_POST ||
2498 s->state == SERVICE_RUNNING ||
2499 s->state == SERVICE_RELOAD)) {
8c47c732 2500
5925dd3c 2501 if (parse_pid(e + 8, &pid) < 0)
92abbefb 2502 log_warning("Failed to parse notification message %s", e);
8c47c732
LP		 2503 else {
2504 log_debug("%s: got %s", u->meta.id, e);
5925dd3c 2505 service_set_main_pid(s, pid);
8c47c732
LP		 2506 }
2507 }
2508
2509 /* Interpret READY= */
2510 if (s->type == SERVICE_NOTIFY &&
2511 s->state == SERVICE_START &&
2512 strv_find(tags, "READY=1")) {
2513 log_debug("%s: got READY=1", u->meta.id);
2514
2515 service_enter_start_post(s);
2516 }
2517
2518 /* Interpret STATUS= */
2519 if ((e = strv_find_prefix(tags, "STATUS="))) {
2520 char *t;
2521
3a2776bc
LP		 2522 if (e[7]) {
2523 if (!(t = strdup(e+7))) {
2524 log_error("Failed to allocate string.");
2525 return;
2526 }
2527
2528 log_debug("%s: got %s", u->meta.id, e);
8c47c732 2529
3a2776bc
LP		 2530 free(s->status_text);
2531 s->status_text = t;
2532 } else {
2533 free(s->status_text);
2534 s->status_text = NULL;
2535 }
8c47c732 2536
8c47c732
LP		 2537 }
2538}
2539
2c4104f0 2540static int service_enumerate(Manager *m) {
2c4104f0
LP		 2541 char **p;
2542 unsigned i;
2543 DIR *d = NULL;
2544 char *path = NULL, *fpath = NULL, *name = NULL;
2545 int r;
2546
2547 assert(m);
2548
84e3543e 2549 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
09cd1ab1 2550 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2c4104f0
LP		 2551 struct dirent *de;
2552
2553 free(path);
2554 path = NULL;
09cd1ab1 2555 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2c4104f0
LP		 2556 r = -ENOMEM;
2557 goto finish;
2558 }
2559
2560 if (d)
2561 closedir(d);
2562
2563 if (!(d = opendir(path))) {
2564 if (errno != ENOENT)
2565 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2566
2567 continue;
2568 }
2569
2570 while ((de = readdir(d))) {
6542952f 2571 Unit *service;
db06e3b6 2572 int a, b;
2c4104f0
LP		 2573
2574 if (ignore_file(de->d_name))
2575 continue;
2576
2577 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2578 continue;
2579
2580 if (strlen(de->d_name) < 4)
2581 continue;
2582
db06e3b6
LP		 2583 a = undecchar(de->d_name[1]);
2584 b = undecchar(de->d_name[2]);
2585
2586 if (a < 0 || b < 0)
2587 continue;
2588
2c4104f0
LP		 2589 free(fpath);
2590 fpath = NULL;
09cd1ab1 2591 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2c4104f0
LP		 2592 r = -ENOMEM;
2593 goto finish;
2594 }
2595
2596 if (access(fpath, X_OK) < 0) {
2597
2598 if (errno != ENOENT)
2599 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2600
2601 continue;
2602 }
2603
2604 free(name);
b7ccee3c 2605 if (!(name = sysv_translate_name(de->d_name + 3))) {
2c4104f0
LP		 2606 r = -ENOMEM;
2607 goto finish;
2608 }
2609
398ef8ba 2610 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
fbe9f3a9
LP		 2611 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2612 continue;
2613 }
2c4104f0 2614
09cd1ab1 2615 if (de->d_name[0] == 'S' &&
fc5df99e 2616 (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT))
fbe9f3a9
LP		 2617 SERVICE(service)->sysv_start_priority =
2618 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
db06e3b6
LP		 2619
2620 manager_dispatch_load_queue(m);
2621 service = unit_follow_merge(service);
2622
f8820b62
LP		 2623 /* If this is a native service, rely
2624 * on native ways to pull in a
2625 * service, don't pull it in via sysv
2626 * rcN.d links. */
2627 if (service->meta.fragment_path)
2628 continue;
2629
2c4104f0 2630 if (de->d_name[0] == 'S') {
2c4104f0 2631
2c966c03 2632 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
2c4104f0 2633 goto finish;
23a177ef 2634
fc5df99e
LP		 2635 } else if (de->d_name[0] == 'K' &&
2636 (rcnd_table[i].type == RUNLEVEL_DOWN ||
2637 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
6542952f 2638
23a177ef
LP		 2639 /* We honour K links only for
2640 * halt/reboot. For the normal
2641 * runlevels we assume the
2642 * stop jobs will be
2643 * implicitly added by the
6542952f
LP		 2644 * core logic. Also, we don't
2645 * really distuingish here
2646 * between the runlevels 0 and
2647 * 6 and just add them to the
fc5df99e
LP		 2648 * special shutdown target. On
2649 * SUSE the boot.d/ runlevel
2650 * is also used for shutdown,
2651 * so we add links for that
2652 * too to the shutdown
2653 * target.*/
6542952f 2654
2c966c03 2655 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
2c4104f0
LP		 2656 goto finish;
2657 }
2658 }
2659 }
2660
2661 r = 0;
2662
2663finish:
2664 free(path);
2665 free(fpath);
2666 free(name);
fbe9f3a9
LP		 2667
2668 if (d)
2669 closedir(d);
2c4104f0
LP		 2670
2671 return r;
2672}
2673
05e343b7
LP		 2674static void service_bus_name_owner_change(
2675 Unit *u,
2676 const char *name,
2677 const char *old_owner,
2678 const char *new_owner) {
2679
2680 Service *s = SERVICE(u);
2681
2682 assert(s);
2683 assert(name);
2684
2685 assert(streq(s->bus_name, name));
2686 assert(old_owner || new_owner);
2687
2688 if (old_owner && new_owner)
2689 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2690 else if (old_owner)
2691 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2692 else
2693 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2694
2695 s->bus_name_good = !!new_owner;
2696
2697 if (s->type == SERVICE_DBUS) {
2698
2699 /* service_enter_running() will figure out what to
2700 * do */
2701 if (s->state == SERVICE_RUNNING)
2702 service_enter_running(s, true);
2703 else if (s->state == SERVICE_START && new_owner)
2704 service_enter_start_post(s);
2705
2706 } else if (new_owner &&
2707 s->main_pid <= 0 &&
2708 (s->state == SERVICE_START ||
2709 s->state == SERVICE_START_POST ||
2710 s->state == SERVICE_RUNNING ||
2711 s->state == SERVICE_RELOAD)) {
2712
2713 /* Try to acquire PID from bus service */
2714 log_debug("Trying to acquire PID from D-Bus name...");
2715
2716 bus_query_pid(u->meta.manager, name);
2717 }
2718}
2719
2720static void service_bus_query_pid_done(
2721 Unit *u,
2722 const char *name,
2723 pid_t pid) {
2724
2725 Service *s = SERVICE(u);
2726
2727 assert(s);
2728 assert(name);
2729
2730 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2731
2732 if (s->main_pid <= 0 &&
2733 (s->state == SERVICE_START ||
2734 s->state == SERVICE_START_POST ||
2735 s->state == SERVICE_RUNNING ||
2736 s->state == SERVICE_RELOAD))
5925dd3c 2737 service_set_main_pid(s, pid);
05e343b7
LP		 2738}
2739
6cf6bbc2 2740int service_set_socket_fd(Service *s, int fd, Socket *sock) {
4f2d528d
LP		 2741 assert(s);
2742 assert(fd >= 0);
2743
2744 /* This is called by the socket code when instantiating a new
2745 * service for a stream socket and the socket needs to be
2746 * configured. */
2747
4cd1fbcc 2748 if (s->meta.load_state != UNIT_LOADED)
4f2d528d
LP		 2749 return -EINVAL;
2750
2751 if (s->socket_fd >= 0)
2752 return -EBUSY;
2753
2754 if (s->state != SERVICE_DEAD)
2755 return -EAGAIN;
2756
2757 s->socket_fd = fd;
701cc384 2758 s->got_socket_fd = true;
6cf6bbc2
LP		 2759 s->socket = sock;
2760
4f2d528d
LP		 2761 return 0;
2762}
2763
5632e374
LP		 2764static void service_reset_maintenance(Unit *u) {
2765 Service *s = SERVICE(u);
2766
2767 assert(s);
2768
2769 if (s->state == SERVICE_MAINTENANCE)
2770 service_set_state(s, SERVICE_DEAD);
2771
2772 s->failure = false;
2773}
2774
94f04347
LP		 2775static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2776 [SERVICE_DEAD] = "dead",
2777 [SERVICE_START_PRE] = "start-pre",
2778 [SERVICE_START] = "start",
2779 [SERVICE_START_POST] = "start-post",
2780 [SERVICE_RUNNING] = "running",
80876c20 2781 [SERVICE_EXITED] = "exited",
94f04347
LP		 2782 [SERVICE_RELOAD] = "reload",
2783 [SERVICE_STOP] = "stop",
2784 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2785 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2786 [SERVICE_STOP_POST] = "stop-post",
2787 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2788 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
18c78fb1 2789 [SERVICE_MAINTENANCE] = "maintenance",
94f04347
LP		 2790 [SERVICE_AUTO_RESTART] = "auto-restart",
2791};
2792
2793DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2794
2795static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2796 [SERVICE_ONCE] = "once",
2797 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
40531a55 2798 [SERVICE_RESTART_ALWAYS] = "restart-always",
94f04347
LP		 2799};
2800
2801DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2802
2803static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
94f04347 2804 [SERVICE_SIMPLE] = "simple",
0d624a78 2805 [SERVICE_FORKING] = "forking",
05e343b7 2806 [SERVICE_FINISH] = "finish",
8c47c732
LP		 2807 [SERVICE_DBUS] = "dbus",
2808 [SERVICE_NOTIFY] = "notify"
94f04347
LP		 2809};
2810
2811DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2812
e537352b 2813static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
94f04347
LP		 2814 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2815 [SERVICE_EXEC_START] = "ExecStart",
2816 [SERVICE_EXEC_START_POST] = "ExecStartPost",
2817 [SERVICE_EXEC_RELOAD] = "ExecReload",
2818 [SERVICE_EXEC_STOP] = "ExecStop",
2819 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2820};
2821
2822DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2823
c952c6ec
LP		 2824static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
2825 [NOTIFY_NONE] = "none",
2826 [NOTIFY_MAIN] = "main",
2827 [NOTIFY_ALL] = "all"
2828};
2829
2830DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
2831
87f0e418 2832const UnitVTable service_vtable = {
5cb5a6ff 2833 .suffix = ".service",
9e58ff9c 2834 .show_status = true,
5cb5a6ff 2835
034c6ed7
LP		 2836 .init = service_init,
2837 .done = service_done,
a16e1123
LP		 2838 .load = service_load,
2839
2840 .coldplug = service_coldplug,
034c6ed7 2841
5cb5a6ff
LP		 2842 .dump = service_dump,
2843
2844 .start = service_start,
2845 .stop = service_stop,
2846 .reload = service_reload,
2847
034c6ed7
LP		 2848 .can_reload = service_can_reload,
2849
a16e1123
LP		 2850 .serialize = service_serialize,
2851 .deserialize_item = service_deserialize_item,
2852
5cb5a6ff 2853 .active_state = service_active_state,
10a94420 2854 .sub_state_to_string = service_sub_state_to_string,
5cb5a6ff 2855
701cc384
LP		 2856 .check_gc = service_check_gc,
2857 .check_snapshot = service_check_snapshot,
2858
034c6ed7
LP		 2859 .sigchld_event = service_sigchld_event,
2860 .timer_event = service_timer_event,
2c4104f0 2861
5632e374
LP		 2862 .reset_maintenance = service_reset_maintenance,
2863
8e274523 2864 .cgroup_notify_empty = service_cgroup_notify_event,
8c47c732 2865 .notify_message = service_notify_message,
8e274523 2866
05e343b7
LP		 2867 .bus_name_owner_change = service_bus_name_owner_change,
2868 .bus_query_pid_done = service_bus_query_pid_done,
2869
4139c1b2
LP		 2870 .bus_message_handler = bus_service_message_handler,
2871
2c4104f0 2872 .enumerate = service_enumerate
5cb5a6ff 2873};
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