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d6c9574f 1/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
5cb5a6ff 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"
9a57c629 37#include "exit-status.h"
f6a6225e
LP		 38#include "def.h"
39#include "util.h"
034c6ed7 40
07459bb6 41#ifdef HAVE_SYSV_COMPAT
f34277d9 42
f6a6225e 43#define DEFAULT_SYSV_TIMEOUT_USEC (5*USEC_PER_MINUTE)
f34277d9 44
09cd1ab1
LP		 45typedef enum RunlevelType {
46 RUNLEVEL_UP,
47 RUNLEVEL_DOWN,
fc5df99e 48 RUNLEVEL_SYSINIT
09cd1ab1
LP		 49} RunlevelType;
50
51static const struct {
52 const char *path;
53 const char *target;
54 const RunlevelType type;
55} rcnd_table[] = {
9d25f5ed 56 /* Standard SysV runlevels for start-up */
514f4ef5 57 { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP },
fbe9f3a9
LP		 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 },
fbe9f3a9 62
d4054675 63#ifdef TARGET_SUSE
cfe243e3 64 /* SUSE style boot.d */
fc5df99e 65 { "boot.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
d4054675 66#endif
fbe9f3a9 67
240fc26e 68#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
fbe9f3a9 69 /* Debian style rcS.d */
fc5df99e 70 { "rcS.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
d4054675 71#endif
9d25f5ed
LP		 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 */
23a177ef
LP		 82};
83
09cd1ab1 84#define RUNLEVELS_UP "12345"
fbe9f3a9 85/* #define RUNLEVELS_DOWN "06" */
e51db373 86#define RUNLEVELS_BOOT "bBsS"
07459bb6 87#endif
09cd1ab1 88
acbb0225 89static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
87f0e418
LP		 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,
80876c20 95 [SERVICE_EXITED] = UNIT_ACTIVE,
032ff4af 96 [SERVICE_RELOAD] = UNIT_RELOADING,
87f0e418
LP		 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,
fdf20a31 103 [SERVICE_FAILED] = UNIT_FAILED,
6124958c 104 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
034c6ed7 105};
5cb5a6ff 106
a16e1123
LP		 107static void service_init(Unit *u) {
108 Service *s = SERVICE(u);
109
110 assert(u);
ac155bb8 111 assert(u->load_state == UNIT_STUB);
a16e1123
LP		 112
113 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
114 s->restart_usec = DEFAULT_RESTART_USEC;
115 s->timer_watch.type = WATCH_INVALID;
07459bb6 116#ifdef HAVE_SYSV_COMPAT
a16e1123 117 s->sysv_start_priority = -1;
ea87ca5a 118 s->sysv_start_priority_from_rcnd = -1;
07459bb6 119#endif
a16e1123 120 s->socket_fd = -1;
3185a36b 121 s->guess_main_pid = true;
a16e1123
LP		 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
5e94833f
LP		 130static 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
140static 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
5925dd3c 150static int service_set_main_pid(Service *s, pid_t pid) {
e55224ca
LP		 151 pid_t ppid;
152
5925dd3c
LP		 153 assert(s);
154
155 if (pid <= 1)
156 return -EINVAL;
157
158 if (pid == getpid())
159 return -EINVAL;
160
6dfa5494
LP		 161 s->main_pid = pid;
162 s->main_pid_known = true;
163
164 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) {
e55224ca 165 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
1124fe6f 166 UNIT(s)->id, (unsigned long) pid);
e55224ca 167
6dfa5494
LP		 168 s->main_pid_alien = true;
169 } else
170 s->main_pid_alien = false;
5925dd3c 171
b58b4116
LP		 172 exec_status_start(&s->main_exec_status, pid);
173
5925dd3c
LP		 174 return 0;
175}
176
4f2d528d
LP		 177static 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
6cf6bbc2
LP		 187static void service_connection_unref(Service *s) {
188 assert(s);
189
57020a3a 190 if (!UNIT_DEREF(s->accept_socket))
6cf6bbc2
LP		 191 return;
192
57020a3a
LP		 193 socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket)));
194 unit_ref_unset(&s->accept_socket);
6cf6bbc2
LP		 195}
196
87f0e418
LP		 197static void service_done(Unit *u) {
198 Service *s = SERVICE(u);
44d8db9e
LP		 199
200 assert(s);
201
202 free(s->pid_file);
203 s->pid_file = NULL;
204
07459bb6 205#ifdef HAVE_SYSV_COMPAT
2c4104f0
LP		 206 free(s->sysv_path);
207 s->sysv_path = NULL;
208
8309400a
LP		 209 free(s->sysv_runlevels);
210 s->sysv_runlevels = NULL;
07459bb6 211#endif
8309400a 212
8c47c732
LP		 213 free(s->status_text);
214 s->status_text = NULL;
215
44d8db9e 216 exec_context_done(&s->exec_context);
e537352b 217 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
44d8db9e 218 s->control_command = NULL;
867b3b7d 219 s->main_command = NULL;
44d8db9e
LP		 220
221 /* This will leak a process, but at least no memory or any of
222 * our resources */
5e94833f
LP		 223 service_unwatch_main_pid(s);
224 service_unwatch_control_pid(s);
44d8db9e 225
05e343b7 226 if (s->bus_name) {
ac155bb8 227 unit_unwatch_bus_name(u, s->bus_name);
05e343b7
LP		 228 free(s->bus_name);
229 s->bus_name = NULL;
230 }
231
4f2d528d 232 service_close_socket_fd(s);
6cf6bbc2 233 service_connection_unref(s);
4f2d528d 234
57020a3a 235 unit_ref_unset(&s->accept_socket);
f976f3f6 236
acbb0225 237 unit_unwatch_timer(u, &s->timer_watch);
44d8db9e
LP		 238}
239
07459bb6 240#ifdef HAVE_SYSV_COMPAT
b7ccee3c
LP		 241static char *sysv_translate_name(const char *name) {
242 char *r;
243
244 if (!(r = new(char, strlen(name) + sizeof(".service"))))
245 return NULL;
246
1bd8b818 247#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
5b819198
MB		 248 if (endswith(name, ".sh"))
249 /* Drop Debian-style .sh suffix */
250 strcpy(stpcpy(r, name) - 3, ".service");
251#endif
252#ifdef TARGET_SUSE
b7ccee3c
LP		 253 if (startswith(name, "boot."))
254 /* Drop SuSE-style boot. prefix */
255 strcpy(stpcpy(r, name + 5), ".service");
5b819198 256#endif
65530632 257#ifdef TARGET_FRUGALWARE
5b819198 258 if (startswith(name, "rc."))
65530632
MV		 259 /* Drop Frugalware-style rc. prefix */
260 strcpy(stpcpy(r, name + 3), ".service");
980900c1 261#endif
b7ccee3c
LP		 262 else
263 /* Normal init scripts */
264 strcpy(stpcpy(r, name), ".service");
265
266 return r;
267}
268
ee95669f 269static int sysv_translate_facility(const char *name, const char *filename, char **_r) {
2c4104f0 270
a7d3cc26
LP		 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
2c4104f0 277 static const char * const table[] = {
6464aa08 278 /* LSB defined facilities */
a7d3cc26 279 "local_fs", SPECIAL_LOCAL_FS_TARGET,
6fdae8a6
DM		 280#if defined(TARGET_MANDRIVA) || defined(TARGET_MAGEIA)
281#else
8d0e38a2
LP		 282 /* Due to unfortunate name selection in Mandriva,
283 * $network is provided by network-up which is ordered
284 * after network which actually starts interfaces.
285 * To break the loop, just ignore it */
a7d3cc26 286 "network", SPECIAL_NETWORK_TARGET,
1de4d79b 287#endif
a7d3cc26
LP		 288 "named", SPECIAL_NSS_LOOKUP_TARGET,
289 "portmap", SPECIAL_RPCBIND_TARGET,
290 "remote_fs", SPECIAL_REMOTE_FS_TARGET,
291 "syslog", SPECIAL_SYSLOG_TARGET,
4466194c 292 "time", SPECIAL_TIME_SYNC_TARGET,
6464aa08 293
0b603b4e
KS		 294 /* common extensions */
295 "mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
296 "x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE,
297 "null", NULL,
298
1bd8b818 299#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
a7d3cc26 300 "mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
3177a49c 301#endif
3177a49c
LP		 302
303#ifdef TARGET_FEDORA
a7d3cc26
LP		 304 "MTA", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
305 "smtpdaemon", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
306 "httpd", SPECIAL_HTTP_DAEMON_TARGET,
3177a49c 307#endif
a7d3cc26 308
0b603b4e
KS		 309#ifdef TARGET_SUSE
310 "smtp", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
311#endif
2c4104f0
LP		 312 };
313
314 unsigned i;
315 char *r;
ee95669f 316 const char *n;
2c4104f0 317
ee95669f
LP		 318 assert(name);
319 assert(_r);
a7d3cc26 320
ee95669f 321 n = *name == '$' ? name + 1 : name;
a7d3cc26 322
ee95669f 323 for (i = 0; i < ELEMENTSOF(table); i += 2) {
a7d3cc26 324
ee95669f
LP		 325 if (!streq(table[i], n))
326 continue;
2c4104f0 327
ee95669f
LP		 328 if (!table[i+1])
329 return 0;
330
331 if (!(r = strdup(table[i+1])))
332 return -ENOMEM;
333
334 goto finish;
335 }
2c4104f0 336
a7d3cc26 337 /* If we don't know this name, fallback heuristics to figure
0003d1ab 338 * out whether something is a target or a service alias. */
a7d3cc26 339
e83c7c0b
LP		 340 if (*name == '$') {
341 if (!unit_prefix_is_valid(n))
342 return -EINVAL;
343
ee95669f
LP		 344 /* Facilities starting with $ are most likely targets */
345 r = unit_name_build(n, NULL, ".target");
e83c7c0b 346 } else if (filename && streq(name, filename))
35b8ca3a 347 /* Names equaling the file name of the services are redundant */
ee95669f 348 return 0;
32159d3a 349 else
ee95669f
LP		 350 /* Everything else we assume to be normal service names */
351 r = sysv_translate_name(n);
2c4104f0 352
32159d3a 353 if (!r)
2c4104f0
LP		 354 return -ENOMEM;
355
356finish:
b4353094 357 *_r = r;
2c4104f0
LP		 358
359 return 1;
360}
361
56d748b4 362static int sysv_fix_order(Service *s) {
ac155bb8 363 Unit *other;
2c4104f0
LP		 364 int r;
365
366 assert(s);
367
368 if (s->sysv_start_priority < 0)
369 return 0;
370
23a177ef
LP		 371 /* For each pair of services where at least one lacks a LSB
372 * header, we use the start priority value to order things. */
2c4104f0 373
1124fe6f 374 LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
2c4104f0
LP		 375 Service *t;
376 UnitDependency d;
eeaafddc 377 bool special_s, special_t;
2c4104f0 378
595ed347 379 t = SERVICE(other);
2c4104f0
LP		 380
381 if (s == t)
382 continue;
9f151f29 383
1124fe6f 384 if (UNIT(t)->load_state != UNIT_LOADED)
9f151f29 385 continue;
2c4104f0
LP		 386
387 if (t->sysv_start_priority < 0)
388 continue;
389
51a1a79d
LP		 390 /* If both units have modern headers we don't care
391 * about the priorities */
1124fe6f
MS		 392 if ((UNIT(s)->fragment_path || s->sysv_has_lsb) &&
393 (UNIT(t)->fragment_path || t->sysv_has_lsb))
23a177ef
LP		 394 continue;
395
eeaafddc
LP		 396 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
397 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
398
399 if (special_t && !special_s)
400 d = UNIT_AFTER;
401 else if (special_s && !special_t)
402 d = UNIT_BEFORE;
403 else if (t->sysv_start_priority < s->sysv_start_priority)
2c4104f0
LP		 404 d = UNIT_AFTER;
405 else if (t->sysv_start_priority > s->sysv_start_priority)
406 d = UNIT_BEFORE;
407 else
408 continue;
409
410 /* FIXME: Maybe we should compare the name here lexicographically? */
411
da19d5c1 412 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
2c4104f0
LP		 413 return r;
414 }
415
416 return 0;
417}
418
419static ExecCommand *exec_command_new(const char *path, const char *arg1) {
420 ExecCommand *c;
421
422 if (!(c = new0(ExecCommand, 1)))
423 return NULL;
424
425 if (!(c->path = strdup(path))) {
426 free(c);
427 return NULL;
428 }
429
430 if (!(c->argv = strv_new(path, arg1, NULL))) {
431 free(c->path);
432 free(c);
433 return NULL;
434 }
435
436 return c;
437}
438
439static int sysv_exec_commands(Service *s) {
440 ExecCommand *c;
441
442 assert(s);
443 assert(s->sysv_path);
444
445 if (!(c = exec_command_new(s->sysv_path, "start")))
446 return -ENOMEM;
447 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
448
449 if (!(c = exec_command_new(s->sysv_path, "stop")))
450 return -ENOMEM;
451 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
452
453 if (!(c = exec_command_new(s->sysv_path, "reload")))
454 return -ENOMEM;
455 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
456
457 return 0;
458}
459
e537352b 460static int service_load_sysv_path(Service *s, const char *path) {
2c4104f0
LP		 461 FILE *f;
462 Unit *u;
463 unsigned line = 0;
464 int r;
465 enum {
466 NORMAL,
467 DESCRIPTION,
468 LSB,
469 LSB_DESCRIPTION
470 } state = NORMAL;
0b5d26f9 471 char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description;
5f4b19f4 472 struct stat st;
23a177ef
LP		 473
474 assert(s);
475 assert(path);
2c4104f0
LP		 476
477 u = UNIT(s);
478
479 if (!(f = fopen(path, "re"))) {
480 r = errno == ENOENT ? 0 : -errno;
481 goto finish;
482 }
483
5f4b19f4
LP		 484 zero(st);
485 if (fstat(fileno(f), &st) < 0) {
486 r = -errno;
487 goto finish;
488 }
489
2c4104f0
LP		 490 free(s->sysv_path);
491 if (!(s->sysv_path = strdup(path))) {
492 r = -ENOMEM;
493 goto finish;
494 }
495
5f4b19f4
LP		 496 s->sysv_mtime = timespec_load(&st.st_mtim);
497
498 if (null_or_empty(&st)) {
ac155bb8 499 u->load_state = UNIT_MASKED;
5f4b19f4
LP		 500 r = 0;
501 goto finish;
502 }
503
2c4104f0
LP		 504 while (!feof(f)) {
505 char l[LINE_MAX], *t;
506
507 if (!fgets(l, sizeof(l), f)) {
508 if (feof(f))
509 break;
510
511 r = -errno;
512 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
513 goto finish;
514 }
515
516 line++;
517
518 t = strstrip(l);
519 if (*t != '#')
520 continue;
521
522 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
523 state = LSB;
23a177ef 524 s->sysv_has_lsb = true;
2c4104f0
LP		 525 continue;
526 }
527
528 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
529 state = NORMAL;
530 continue;
531 }
532
533 t++;
534 t += strspn(t, WHITESPACE);
535
536 if (state == NORMAL) {
537
538 /* Try to parse Red Hat style chkconfig headers */
539
c2b35af6 540 if (startswith_no_case(t, "chkconfig:")) {
2c4104f0 541 int start_priority;
8309400a 542 char runlevels[16], *k;
2c4104f0
LP		 543
544 state = NORMAL;
545
8309400a
LP		 546 if (sscanf(t+10, "%15s %i %*i",
547 runlevels,
548 &start_priority) != 2) {
2c4104f0
LP		 549
550 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
551 continue;
552 }
553
fbe9f3a9
LP		 554 /* A start priority gathered from the
555 * symlink farms is preferred over the
556 * data from the LSB header. */
8309400a 557 if (start_priority < 0 || start_priority > 99)
2c4104f0 558 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
ea87ca5a 559 else
8309400a
LP		 560 s->sysv_start_priority = start_priority;
561
562 char_array_0(runlevels);
563 k = delete_chars(runlevels, WHITESPACE "-");
564
565 if (k[0]) {
566 char *d;
567
568 if (!(d = strdup(k))) {
569 r = -ENOMEM;
570 goto finish;
571 }
572
573 free(s->sysv_runlevels);
574 s->sysv_runlevels = d;
2c4104f0
LP		 575 }
576
0b5d26f9 577 } else if (startswith_no_case(t, "description:")) {
2c4104f0
LP		 578
579 size_t k = strlen(t);
580 char *d;
0b5d26f9 581 const char *j;
2c4104f0
LP		 582
583 if (t[k-1] == '\\') {
584 state = DESCRIPTION;
585 t[k-1] = 0;
586 }
587
0b5d26f9
LP		 588 if ((j = strstrip(t+12)) && *j) {
589 if (!(d = strdup(j))) {
590 r = -ENOMEM;
591 goto finish;
592 }
593 } else
594 d = NULL;
2c4104f0 595
0b5d26f9
LP		 596 free(chkconfig_description);
597 chkconfig_description = d;
2c4104f0 598
c2b35af6 599 } else if (startswith_no_case(t, "pidfile:")) {
2c4104f0
LP		 600
601 char *fn;
602
603 state = NORMAL;
604
605 fn = strstrip(t+8);
606 if (!path_is_absolute(fn)) {
607 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
608 continue;
609 }
610
611 if (!(fn = strdup(fn))) {
612 r = -ENOMEM;
613 goto finish;
614 }
615
616 free(s->pid_file);
617 s->pid_file = fn;
618 }
619
620 } else if (state == DESCRIPTION) {
621
622 /* Try to parse Red Hat style description
623 * continuation */
624
625 size_t k = strlen(t);
0b5d26f9 626 char *j;
2c4104f0
LP		 627
628 if (t[k-1] == '\\')
629 t[k-1] = 0;
630 else
631 state = NORMAL;
632
0b5d26f9
LP		 633 if ((j = strstrip(t)) && *j) {
634 char *d = NULL;
635
636 if (chkconfig_description)
44d91056 637 d = join(chkconfig_description, " ", j, NULL);
0b5d26f9
LP		 638 else
639 d = strdup(j);
2c4104f0 640
0b5d26f9
LP		 641 if (!d) {
642 r = -ENOMEM;
643 goto finish;
644 }
645
646 free(chkconfig_description);
647 chkconfig_description = d;
648 }
2c4104f0
LP		 649
650 } else if (state == LSB || state == LSB_DESCRIPTION) {
651
c2b35af6 652 if (startswith_no_case(t, "Provides:")) {
2c4104f0
LP		 653 char *i, *w;
654 size_t z;
655
656 state = LSB;
657
f60f22df 658 FOREACH_WORD_QUOTED(w, z, t+9, i) {
2c4104f0
LP		 659 char *n, *m;
660
661 if (!(n = strndup(w, z))) {
662 r = -ENOMEM;
663 goto finish;
664 }
665
ee95669f 666 r = sysv_translate_facility(n, file_name_from_path(path), &m);
2c4104f0
LP		 667 free(n);
668
669 if (r < 0)
670 goto finish;
671
672 if (r == 0)
673 continue;
674
bd77d0fc
LP		 675 if (unit_name_to_type(m) == UNIT_SERVICE)
676 r = unit_add_name(u, m);
9700edb4
LP		 677 else
678 /* NB: SysV targets
679 * which are provided
680 * by a service are
681 * pulled in by the
682 * services, as an
683 * indication that the
684 * generic service is
685 * now available. This
686 * is strictly
687 * one-way. The
688 * targets do NOT pull
689 * in the SysV
690 * services! */
691 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_WANTS, m, NULL, true);
bd77d0fc 692
2c4104f0 693 if (r < 0)
43a37549 694 log_error("[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", path, line, m, strerror(-r));
42a097a2
LP		 695
696 free(m);
2c4104f0
LP		 697 }
698
c2b35af6
LP		 699 } else if (startswith_no_case(t, "Required-Start:") ||
700 startswith_no_case(t, "Should-Start:") ||
701 startswith_no_case(t, "X-Start-Before:") ||
702 startswith_no_case(t, "X-Start-After:")) {
2c4104f0
LP		 703 char *i, *w;
704 size_t z;
705
706 state = LSB;
707
f60f22df 708 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
2c4104f0
LP		 709 char *n, *m;
710
711 if (!(n = strndup(w, z))) {
712 r = -ENOMEM;
713 goto finish;
714 }
715
ee95669f 716 r = sysv_translate_facility(n, file_name_from_path(path), &m);
2c4104f0 717
e83c7c0b
LP		 718 if (r < 0) {
719 log_error("[%s:%u] Failed to translate LSB dependency %s, ignoring: %s", path, line, n, strerror(-r));
720 free(n);
721 continue;
722 }
723
724 free(n);
2c4104f0
LP		 725
726 if (r == 0)
727 continue;
728
c2b35af6 729 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
2c4104f0
LP		 730
731 if (r < 0)
43a37549 732 log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", path, line, m, strerror(-r));
42a097a2
LP		 733
734 free(m);
2c4104f0 735 }
c2b35af6 736 } else if (startswith_no_case(t, "Default-Start:")) {
8309400a
LP		 737 char *k, *d;
738
739 state = LSB;
740
741 k = delete_chars(t+14, WHITESPACE "-");
742
743 if (k[0] != 0) {
744 if (!(d = strdup(k))) {
745 r = -ENOMEM;
746 goto finish;
747 }
748
749 free(s->sysv_runlevels);
750 s->sysv_runlevels = d;
751 }
2c4104f0 752
0b5d26f9
LP		 753 } else if (startswith_no_case(t, "Description:")) {
754 char *d, *j;
ed4c1cc6 755
2c4104f0
LP		 756 state = LSB_DESCRIPTION;
757
0b5d26f9
LP		 758 if ((j = strstrip(t+12)) && *j) {
759 if (!(d = strdup(j))) {
760 r = -ENOMEM;
761 goto finish;
762 }
763 } else
764 d = NULL;
2c4104f0 765
0b5d26f9
LP		 766 free(long_description);
767 long_description = d;
2c4104f0 768
ed4c1cc6 769 } else if (startswith_no_case(t, "Short-Description:")) {
0b5d26f9 770 char *d, *j;
2c4104f0 771
2c4104f0
LP		 772 state = LSB;
773
0b5d26f9
LP		 774 if ((j = strstrip(t+18)) && *j) {
775 if (!(d = strdup(j))) {
776 r = -ENOMEM;
777 goto finish;
778 }
779 } else
780 d = NULL;
2c4104f0 781
0b5d26f9
LP		 782 free(short_description);
783 short_description = d;
2c4104f0
LP		 784
785 } else if (state == LSB_DESCRIPTION) {
786
787 if (startswith(l, "#\t") || startswith(l, "# ")) {
0b5d26f9 788 char *j;
2c4104f0 789
0b5d26f9
LP		 790 if ((j = strstrip(t)) && *j) {
791 char *d = NULL;
792
793 if (long_description)
44d91056 794 d = join(long_description, " ", t, NULL);
0b5d26f9
LP		 795 else
796 d = strdup(j);
797
798 if (!d) {
799 r = -ENOMEM;
800 goto finish;
801 }
802
803 free(long_description);
804 long_description = d;
2c4104f0
LP		 805 }
806
2c4104f0
LP		 807 } else
808 state = LSB;
809 }
810 }
811 }
812
2c4104f0
LP		 813 if ((r = sysv_exec_commands(s)) < 0)
814 goto finish;
e51db373
TFH		 815 if (s->sysv_runlevels &&
816 chars_intersect(RUNLEVELS_BOOT, s->sysv_runlevels) &&
817 chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
818 /* Service has both boot and "up" runlevels
819 configured. Kill the "up" ones. */
820 delete_chars(s->sysv_runlevels, RUNLEVELS_UP);
821 }
2c4104f0 822
a40eb732 823 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
0bc824be
LP		 824 /* If there a runlevels configured for this service
825 * but none of the standard ones, then we assume this
826 * is some special kind of service (which might be
827 * needed for early boot) and don't create any links
828 * to it. */
829
1124fe6f 830 UNIT(s)->default_dependencies = false;
09cd1ab1 831
09cd1ab1
LP		 832 /* Don't timeout special services during boot (like fsck) */
833 s->timeout_usec = 0;
f34277d9
LP		 834 } else
835 s->timeout_usec = DEFAULT_SYSV_TIMEOUT_USEC;
0fd030be 836
80876c20 837 /* Special setting for all SysV services */
1f48cf56 838 s->type = SERVICE_FORKING;
f8788303 839 s->remain_after_exit = !s->pid_file;
1835f23c 840 s->guess_main_pid = false;
525ee6f4 841 s->restart = SERVICE_RESTART_NO;
4dfc092a 842
1124fe6f 843 if (UNIT(s)->manager->sysv_console)
706343f4 844 s->exec_context.std_output = EXEC_OUTPUT_JOURNAL_AND_CONSOLE;
4dfc092a 845
cd25cce9 846 s->exec_context.kill_mode = KILL_PROCESS;
80876c20 847
0b5d26f9
LP		 848 /* We use the long description only if
849 * no short description is set. */
850
851 if (short_description)
852 description = short_description;
853 else if (chkconfig_description)
854 description = chkconfig_description;
855 else if (long_description)
856 description = long_description;
857 else
858 description = NULL;
859
860 if (description) {
861 char *d;
862
e527618d 863 if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) {
0b5d26f9
LP		 864 r = -ENOMEM;
865 goto finish;
866 }
867
ac155bb8 868 u->description = d;
0b5d26f9
LP		 869 }
870
ea87ca5a
LP		 871 /* The priority that has been set in /etc/rcN.d/ hierarchies
872 * takes precedence over what is stored as default in the LSB
873 * header */
874 if (s->sysv_start_priority_from_rcnd >= 0)
875 s->sysv_start_priority = s->sysv_start_priority_from_rcnd;
876
ac155bb8 877 u->load_state = UNIT_LOADED;
23a177ef 878 r = 0;
2c4104f0
LP		 879
880finish:
881
882 if (f)
883 fclose(f);
884
0b5d26f9
LP		 885 free(short_description);
886 free(long_description);
887 free(chkconfig_description);
888
2c4104f0
LP		 889 return r;
890}
891
e537352b 892static int service_load_sysv_name(Service *s, const char *name) {
2c4104f0
LP		 893 char **p;
894
895 assert(s);
896 assert(name);
897
e1992852 898 /* For SysV services we strip the boot.*, rc.* and *.sh
d017c6ca 899 * prefixes/suffixes. */
1bd8b818 900#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
5b819198 901 if (endswith(name, ".sh.service"))
d017c6ca 902 return -ENOENT;
5b819198
MB		 903#endif
904
905#ifdef TARGET_SUSE
906 if (startswith(name, "boot."))
907 return -ENOENT;
908#endif
909
910#ifdef TARGET_FRUGALWARE
911 if (startswith(name, "rc."))
912 return -ENOENT;
913#endif
d017c6ca 914
1124fe6f 915 STRV_FOREACH(p, UNIT(s)->manager->lookup_paths.sysvinit_path) {
2c4104f0
LP		 916 char *path;
917 int r;
918
44d91056
LP		 919 path = join(*p, "/", name, NULL);
920 if (!path)
2c4104f0
LP		 921 return -ENOMEM;
922
923 assert(endswith(path, ".service"));
924 path[strlen(path)-8] = 0;
925
e537352b 926 r = service_load_sysv_path(s, path);
fbe9f3a9 927
1bd8b818 928#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
1124fe6f 929 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
e1992852 930 /* Try Debian style *.sh source'able init scripts */
fbe9f3a9
LP		 931 strcat(path, ".sh");
932 r = service_load_sysv_path(s, path);
933 }
e1992852 934#endif
2c4104f0
LP		 935 free(path);
936
e1992852 937#ifdef TARGET_SUSE
1124fe6f 938 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
e1992852 939 /* Try SUSE style boot.* init scripts */
fbe9f3a9 940
44d91056
LP		 941 path = join(*p, "/boot.", name, NULL);
942 if (!path)
fbe9f3a9
LP		 943 return -ENOMEM;
944
e1992852 945 /* Drop .service suffix */
fbe9f3a9
LP		 946 path[strlen(path)-8] = 0;
947 r = service_load_sysv_path(s, path);
948 free(path);
949 }
e1992852 950#endif
fbe9f3a9 951
e1992852 952#ifdef TARGET_FRUGALWARE
1124fe6f 953 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
e1992852 954 /* Try Frugalware style rc.* init scripts */
65530632 955
44d91056
LP		 956 path = join(*p, "/rc.", name, NULL);
957 if (!path)
65530632
MV		 958 return -ENOMEM;
959
e1992852 960 /* Drop .service suffix */
65530632
MV		 961 path[strlen(path)-8] = 0;
962 r = service_load_sysv_path(s, path);
963 free(path);
964 }
e1992852 965#endif
65530632 966
23a177ef 967 if (r < 0)
2c4104f0 968 return r;
23a177ef 969
1124fe6f 970 if ((UNIT(s)->load_state != UNIT_STUB))
23a177ef 971 break;
2c4104f0
LP		 972 }
973
974 return 0;
975}
976
e537352b 977static int service_load_sysv(Service *s) {
2c4104f0
LP		 978 const char *t;
979 Iterator i;
980 int r;
981
5cb5a6ff
LP		 982 assert(s);
983
984 /* Load service data from SysV init scripts, preferably with
985 * LSB headers ... */
986
1124fe6f 987 if (strv_isempty(UNIT(s)->manager->lookup_paths.sysvinit_path))
2c4104f0
LP		 988 return 0;
989
1124fe6f 990 if ((t = UNIT(s)->id))
e537352b 991 if ((r = service_load_sysv_name(s, t)) < 0)
2c4104f0
LP		 992 return r;
993
1124fe6f
MS		 994 if (UNIT(s)->load_state == UNIT_STUB)
995 SET_FOREACH(t, UNIT(s)->names, i) {
996 if (t == UNIT(s)->id)
e537352b
LP		 997 continue;
998
e364ad06 999 if ((r = service_load_sysv_name(s, t)) < 0)
23a177ef
LP		 1000 return r;
1001
1124fe6f 1002 if (UNIT(s)->load_state != UNIT_STUB)
23a177ef
LP		 1003 break;
1004 }
2c4104f0
LP		 1005
1006 return 0;
5cb5a6ff 1007}
07459bb6 1008#endif
5cb5a6ff 1009
9fff8a1f 1010static int fsck_fix_order(Service *s) {
ac155bb8 1011 Unit *other;
9fff8a1f
LP		 1012 int r;
1013
1014 assert(s);
1015
1016 if (s->fsck_passno <= 0)
1017 return 0;
1018
1019 /* For each pair of services where both have an fsck priority
1020 * we order things based on it. */
1021
1124fe6f 1022 LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
9fff8a1f
LP		 1023 Service *t;
1024 UnitDependency d;
1025
595ed347 1026 t = SERVICE(other);
9fff8a1f
LP		 1027
1028 if (s == t)
1029 continue;
1030
1124fe6f 1031 if (UNIT(t)->load_state != UNIT_LOADED)
9fff8a1f
LP		 1032 continue;
1033
1034 if (t->fsck_passno <= 0)
1035 continue;
1036
1037 if (t->fsck_passno < s->fsck_passno)
1038 d = UNIT_AFTER;
1039 else if (t->fsck_passno > s->fsck_passno)
1040 d = UNIT_BEFORE;
1041 else
1042 continue;
1043
da19d5c1 1044 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
9fff8a1f
LP		 1045 return r;
1046 }
1047
1048 return 0;
1049}
1050
243b1432
LP		 1051static int service_verify(Service *s) {
1052 assert(s);
1053
1124fe6f 1054 if (UNIT(s)->load_state != UNIT_LOADED)
243b1432
LP		 1055 return 0;
1056
1057 if (!s->exec_command[SERVICE_EXEC_START]) {
1124fe6f 1058 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->id);
243b1432
LP		 1059 return -EINVAL;
1060 }
1061
34e9ba66
LP		 1062 if (s->type != SERVICE_ONESHOT &&
1063 s->exec_command[SERVICE_EXEC_START]->command_next) {
1124fe6f 1064 log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
6cf6bbc2
LP		 1065 return -EINVAL;
1066 }
1067
c06b7a15
LP		 1068 if (s->type == SERVICE_ONESHOT &&
1069 s->exec_command[SERVICE_EXEC_RELOAD]) {
1124fe6f 1070 log_error("%s has an ExecReload setting, which is not allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
c06b7a15
LP		 1071 return -EINVAL;
1072 }
1073
05e343b7 1074 if (s->type == SERVICE_DBUS && !s->bus_name) {
1124fe6f 1075 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->id);
4d0e5dbd
LP		 1076 return -EINVAL;
1077 }
1078
2e22afe9 1079 if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
1124fe6f 1080 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id);
05e343b7
LP		 1081 return -EINVAL;
1082 }
1083
243b1432
LP		 1084 return 0;
1085}
1086
a40eb732
LP		 1087static int service_add_default_dependencies(Service *s) {
1088 int r;
1089
1090 assert(s);
1091
1092 /* Add a number of automatic dependencies useful for the
1093 * majority of services. */
1094
1095 /* First, pull in base system */
1124fe6f 1096 if (UNIT(s)->manager->running_as == MANAGER_SYSTEM) {
a40eb732
LP		 1097
1098 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
1099 return r;
1100
1124fe6f 1101 } else if (UNIT(s)->manager->running_as == MANAGER_USER) {
a40eb732
LP		 1102
1103 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
1104 return r;
1105 }
1106
1107 /* Second, activate normal shutdown */
ead8e478 1108 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
a40eb732
LP		 1109}
1110
4dfc092a
LP		 1111static void service_fix_output(Service *s) {
1112 assert(s);
1113
1114 /* If nothing has been explicitly configured, patch default
1115 * output in. If input is socket/tty we avoid this however,
1116 * since in that case we want output to default to the same
1117 * place as we read input from. */
1118
1119 if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
1120 s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1121 s->exec_context.std_input == EXEC_INPUT_NULL)
1124fe6f 1122 s->exec_context.std_error = UNIT(s)->manager->default_std_error;
4dfc092a
LP		 1123
1124 if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1125 s->exec_context.std_input == EXEC_INPUT_NULL)
1124fe6f 1126 s->exec_context.std_output = UNIT(s)->manager->default_std_output;
4dfc092a
LP		 1127}
1128
e537352b
LP		 1129static int service_load(Unit *u) {
1130 int r;
1131 Service *s = SERVICE(u);
1132
1133 assert(s);
1e2e8133 1134
5cb5a6ff 1135 /* Load a .service file */
e537352b 1136 if ((r = unit_load_fragment(u)) < 0)
5cb5a6ff
LP		 1137 return r;
1138
07459bb6 1139#ifdef HAVE_SYSV_COMPAT
bd77d0fc 1140 /* Load a classic init script as a fallback, if we couldn't find anything */
ac155bb8 1141 if (u->load_state == UNIT_STUB)
e537352b 1142 if ((r = service_load_sysv(s)) < 0)
23a177ef 1143 return r;
07459bb6 1144#endif
d46de8a1 1145
23a177ef 1146 /* Still nothing found? Then let's give up */
ac155bb8 1147 if (u->load_state == UNIT_STUB)
23a177ef 1148 return -ENOENT;
034c6ed7 1149
23a177ef
LP		 1150 /* We were able to load something, then let's add in the
1151 * dropin directories. */
1152 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
8e274523 1153 return r;
23a177ef
LP		 1154
1155 /* This is a new unit? Then let's add in some extras */
ac155bb8 1156 if (u->load_state == UNIT_LOADED) {
4e2b0f9b
LP		 1157 service_fix_output(s);
1158
23a177ef
LP		 1159 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
1160 return r;
1161
d686d8a9 1162 if ((r = unit_add_default_cgroups(u)) < 0)
23a177ef
LP		 1163 return r;
1164
07459bb6 1165#ifdef HAVE_SYSV_COMPAT
56d748b4 1166 if ((r = sysv_fix_order(s)) < 0)
23a177ef 1167 return r;
07459bb6 1168#endif
05e343b7 1169
9fff8a1f
LP		 1170 if ((r = fsck_fix_order(s)) < 0)
1171 return r;
1172
ee0dd802 1173 if (s->bus_name)
05e343b7 1174 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
a40eb732 1175 return r;
c952c6ec
LP		 1176
1177 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1178 s->notify_access = NOTIFY_MAIN;
a40eb732
LP		 1179
1180 if (s->type == SERVICE_DBUS || s->bus_name)
177b3ffe 1181 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true)) < 0)
a40eb732
LP		 1182 return r;
1183
1124fe6f 1184 if (UNIT(s)->default_dependencies)
a40eb732
LP		 1185 if ((r = service_add_default_dependencies(s)) < 0)
1186 return r;
8e274523
LP		 1187 }
1188
243b1432 1189 return service_verify(s);
034c6ed7
LP		 1190}
1191
87f0e418 1192static void service_dump(Unit *u, FILE *f, const char *prefix) {
5cb5a6ff 1193
5cb5a6ff 1194 ServiceExecCommand c;
87f0e418 1195 Service *s = SERVICE(u);
47be870b
LP		 1196 const char *prefix2;
1197 char *p2;
5cb5a6ff
LP		 1198
1199 assert(s);
1200
47be870b
LP		 1201 p2 = strappend(prefix, "\t");
1202 prefix2 = p2 ? p2 : prefix;
44d8db9e 1203
5cb5a6ff 1204 fprintf(f,
81a2b7ce
LP		 1205 "%sService State: %s\n"
1206 "%sPermissionsStartOnly: %s\n"
8e274523 1207 "%sRootDirectoryStartOnly: %s\n"
02ee865a 1208 "%sRemainAfterExit: %s\n"
3185a36b 1209 "%sGuessMainPID: %s\n"
c952c6ec 1210 "%sType: %s\n"
2cf3143a 1211 "%sRestart: %s\n"
c952c6ec 1212 "%sNotifyAccess: %s\n",
81a2b7ce
LP		 1213 prefix, service_state_to_string(s->state),
1214 prefix, yes_no(s->permissions_start_only),
8e274523 1215 prefix, yes_no(s->root_directory_start_only),
02ee865a 1216 prefix, yes_no(s->remain_after_exit),
3185a36b 1217 prefix, yes_no(s->guess_main_pid),
c952c6ec 1218 prefix, service_type_to_string(s->type),
2cf3143a 1219 prefix, service_restart_to_string(s->restart),
c952c6ec 1220 prefix, notify_access_to_string(s->notify_access));
5cb5a6ff 1221
70123e68
LP		 1222 if (s->control_pid > 0)
1223 fprintf(f,
bb00e604
LP		 1224 "%sControl PID: %lu\n",
1225 prefix, (unsigned long) s->control_pid);
70123e68
LP		 1226
1227 if (s->main_pid > 0)
1228 fprintf(f,
6dfa5494
LP		 1229 "%sMain PID: %lu\n"
1230 "%sMain PID Known: %s\n"
1231 "%sMain PID Alien: %s\n",
1232 prefix, (unsigned long) s->main_pid,
1233 prefix, yes_no(s->main_pid_known),
1234 prefix, yes_no(s->main_pid_alien));
70123e68 1235
034c6ed7
LP		 1236 if (s->pid_file)
1237 fprintf(f,
1238 "%sPIDFile: %s\n",
1239 prefix, s->pid_file);
1240
05e343b7
LP		 1241 if (s->bus_name)
1242 fprintf(f,
1243 "%sBusName: %s\n"
1244 "%sBus Name Good: %s\n",
1245 prefix, s->bus_name,
1246 prefix, yes_no(s->bus_name_good));
1247
5cb5a6ff
LP		 1248 exec_context_dump(&s->exec_context, f, prefix);
1249
e537352b 1250 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
5cb5a6ff 1251
44d8db9e
LP		 1252 if (!s->exec_command[c])
1253 continue;
1254
40d50879 1255 fprintf(f, "%s-> %s:\n",
94f04347 1256 prefix, service_exec_command_to_string(c));
44d8db9e
LP		 1257
1258 exec_command_dump_list(s->exec_command[c], f, prefix2);
5cb5a6ff 1259 }
44d8db9e 1260
07459bb6 1261#ifdef HAVE_SYSV_COMPAT
2c4104f0
LP		 1262 if (s->sysv_path)
1263 fprintf(f,
23a177ef 1264 "%sSysV Init Script Path: %s\n"
9fff8a1f
LP		 1265 "%sSysV Init Script has LSB Header: %s\n"
1266 "%sSysVEnabled: %s\n",
23a177ef 1267 prefix, s->sysv_path,
9fff8a1f
LP		 1268 prefix, yes_no(s->sysv_has_lsb),
1269 prefix, yes_no(s->sysv_enabled));
2c4104f0
LP		 1270
1271 if (s->sysv_start_priority >= 0)
1272 fprintf(f,
9fff8a1f
LP		 1273 "%sSysVStartPriority: %i\n",
1274 prefix, s->sysv_start_priority);
2c4104f0 1275
8309400a
LP		 1276 if (s->sysv_runlevels)
1277 fprintf(f, "%sSysVRunLevels: %s\n",
1278 prefix, s->sysv_runlevels);
07459bb6 1279#endif
23a177ef 1280
9fff8a1f
LP		 1281 if (s->fsck_passno > 0)
1282 fprintf(f,
1283 "%sFsckPassNo: %i\n",
1284 prefix, s->fsck_passno);
1285
8c47c732
LP		 1286 if (s->status_text)
1287 fprintf(f, "%sStatus Text: %s\n",
1288 prefix, s->status_text);
1289
47be870b 1290 free(p2);
5cb5a6ff
LP		 1291}
1292
c5419d42 1293static int service_load_pid_file(Service *s, bool may_warn) {
034c6ed7 1294 char *k;
034c6ed7 1295 int r;
5925dd3c 1296 pid_t pid;
034c6ed7
LP		 1297
1298 assert(s);
1299
034c6ed7 1300 if (!s->pid_file)
13230d5d 1301 return -ENOENT;
034c6ed7 1302
5375410b 1303 if ((r = read_one_line_file(s->pid_file, &k)) < 0) {
c5419d42 1304 if (may_warn)
3a111838
MS		 1305 log_info("PID file %s not readable (yet?) after %s.",
1306 s->pid_file, service_state_to_string(s->state));
034c6ed7 1307 return r;
5375410b 1308 }
034c6ed7 1309
5925dd3c
LP		 1310 r = parse_pid(k, &pid);
1311 free(k);
034c6ed7 1312
5925dd3c
LP		 1313 if (r < 0)
1314 return r;
406eaf93 1315
5925dd3c 1316 if (kill(pid, 0) < 0 && errno != EPERM) {
c5419d42 1317 if (may_warn)
3a111838
MS		 1318 log_info("PID %lu read from file %s does not exist.",
1319 (unsigned long) pid, s->pid_file);
b8c597d5
LP		 1320 return -ESRCH;
1321 }
1322
db01f8b3
MS		 1323 if (s->main_pid_known) {
1324 if (pid == s->main_pid)
1325 return 0;
1326
1327 log_debug("Main PID changing: %lu -> %lu",
1328 (unsigned long) s->main_pid, (unsigned long) pid);
1329 service_unwatch_main_pid(s);
1330 s->main_pid_known = false;
3a111838
MS		 1331 } else
1332 log_debug("Main PID loaded: %lu", (unsigned long) pid);
db01f8b3 1333
5925dd3c 1334 if ((r = service_set_main_pid(s, pid)) < 0)
16f6025e
LP		 1335 return r;
1336
5925dd3c
LP		 1337 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1338 /* FIXME: we need to do something here */
1339 return r;
034c6ed7
LP		 1340
1341 return 0;
1342}
1343
4fbf50b3
LP		 1344static int service_search_main_pid(Service *s) {
1345 pid_t pid;
1346 int r;
1347
1348 assert(s);
1349
3185a36b
LP		 1350 /* If we know it anyway, don't ever fallback to unreliable
1351 * heuristics */
4fbf50b3
LP		 1352 if (s->main_pid_known)
1353 return 0;
1354
3185a36b
LP		 1355 if (!s->guess_main_pid)
1356 return 0;
1357
4fbf50b3
LP		 1358 assert(s->main_pid <= 0);
1359
1124fe6f 1360 if ((pid = cgroup_bonding_search_main_pid_list(UNIT(s)->cgroup_bondings)) <= 0)
4fbf50b3
LP		 1361 return -ENOENT;
1362
3a111838 1363 log_debug("Main PID guessed: %lu", (unsigned long) pid);
4fbf50b3
LP		 1364 if ((r = service_set_main_pid(s, pid)) < 0)
1365 return r;
1366
1367 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1368 /* FIXME: we need to do something here */
1369 return r;
1370
1371 return 0;
1372}
1373
57020a3a 1374static void service_notify_sockets_dead(Service *s) {
ceee3d82 1375 Iterator i;
57020a3a 1376 Unit *u;
3e33402a
LP		 1377
1378 assert(s);
1379
f976f3f6
LP		 1380 /* Notifies all our sockets when we die */
1381
6cf6bbc2 1382 if (s->socket_fd >= 0)
57020a3a 1383 return;
3e33402a 1384
1124fe6f 1385 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i)
ac155bb8 1386 if (u->type == UNIT_SOCKET)
57020a3a 1387 socket_notify_service_dead(SOCKET(u));
3e33402a 1388
57020a3a 1389 return;
ceee3d82
LP		 1390}
1391
3a111838
MS		 1392static void service_unwatch_pid_file(Service *s) {
1393 if (!s->pid_file_pathspec)
1394 return;
1395
1124fe6f 1396 log_debug("Stopping watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path);
57020a3a
LP		 1397 path_spec_unwatch(s->pid_file_pathspec, UNIT(s));
1398 path_spec_done(s->pid_file_pathspec);
3a111838
MS		 1399 free(s->pid_file_pathspec);
1400 s->pid_file_pathspec = NULL;
1401}
1402
034c6ed7
LP		 1403static void service_set_state(Service *s, ServiceState state) {
1404 ServiceState old_state;
5cb5a6ff
LP		 1405 assert(s);
1406
034c6ed7 1407 old_state = s->state;
5cb5a6ff 1408 s->state = state;
034c6ed7 1409
3a111838
MS		 1410 service_unwatch_pid_file(s);
1411
034c6ed7
LP		 1412 if (state != SERVICE_START_PRE &&
1413 state != SERVICE_START &&
1414 state != SERVICE_START_POST &&
1415 state != SERVICE_RELOAD &&
1416 state != SERVICE_STOP &&
1417 state != SERVICE_STOP_SIGTERM &&
1418 state != SERVICE_STOP_SIGKILL &&
1419 state != SERVICE_STOP_POST &&
1420 state != SERVICE_FINAL_SIGTERM &&
1421 state != SERVICE_FINAL_SIGKILL &&
1422 state != SERVICE_AUTO_RESTART)
acbb0225 1423 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1424
7d55e835
LP		 1425 if (state != SERVICE_START &&
1426 state != SERVICE_START_POST &&
034c6ed7
LP		 1427 state != SERVICE_RUNNING &&
1428 state != SERVICE_RELOAD &&
1429 state != SERVICE_STOP &&
1430 state != SERVICE_STOP_SIGTERM &&
867b3b7d 1431 state != SERVICE_STOP_SIGKILL) {
5e94833f 1432 service_unwatch_main_pid(s);
867b3b7d
LP		 1433 s->main_command = NULL;
1434 }
034c6ed7
LP		 1435
1436 if (state != SERVICE_START_PRE &&
1437 state != SERVICE_START &&
1438 state != SERVICE_START_POST &&
1439 state != SERVICE_RELOAD &&
1440 state != SERVICE_STOP &&
1441 state != SERVICE_STOP_SIGTERM &&
1442 state != SERVICE_STOP_SIGKILL &&
1443 state != SERVICE_STOP_POST &&
1444 state != SERVICE_FINAL_SIGTERM &&
e537352b 1445 state != SERVICE_FINAL_SIGKILL) {
5e94833f 1446 service_unwatch_control_pid(s);
034c6ed7 1447 s->control_command = NULL;
a16e1123 1448 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
e537352b 1449 }
034c6ed7 1450
ceee3d82
LP		 1451 if (state == SERVICE_DEAD ||
1452 state == SERVICE_STOP ||
1453 state == SERVICE_STOP_SIGTERM ||
1454 state == SERVICE_STOP_SIGKILL ||
1455 state == SERVICE_STOP_POST ||
1456 state == SERVICE_FINAL_SIGTERM ||
1457 state == SERVICE_FINAL_SIGKILL ||
fdf20a31 1458 state == SERVICE_FAILED ||
ceee3d82 1459 state == SERVICE_AUTO_RESTART)
e537352b 1460 service_notify_sockets_dead(s);
ceee3d82 1461
4f2d528d
LP		 1462 if (state != SERVICE_START_PRE &&
1463 state != SERVICE_START &&
6cf6bbc2
LP		 1464 state != SERVICE_START_POST &&
1465 state != SERVICE_RUNNING &&
1466 state != SERVICE_RELOAD &&
1467 state != SERVICE_STOP &&
1468 state != SERVICE_STOP_SIGTERM &&
1469 state != SERVICE_STOP_SIGKILL &&
1470 state != SERVICE_STOP_POST &&
1471 state != SERVICE_FINAL_SIGTERM &&
1472 state != SERVICE_FINAL_SIGKILL &&
1124fe6f 1473 !(state == SERVICE_DEAD && UNIT(s)->job)) {
4f2d528d 1474 service_close_socket_fd(s);
6cf6bbc2
LP		 1475 service_connection_unref(s);
1476 }
4f2d528d 1477
f6023656
LP		 1478 /* For the inactive states unit_notify() will trim the cgroup,
1479 * but for exit we have to do that ourselves... */
1124fe6f
MS		 1480 if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0)
1481 cgroup_bonding_trim_list(UNIT(s)->cgroup_bondings, true);
f6023656 1482
e537352b 1483 if (old_state != state)
1124fe6f 1484 log_debug("%s changed %s -> %s", UNIT(s)->id, service_state_to_string(old_state), service_state_to_string(state));
acbb0225 1485
e2f3b44c
LP		 1486 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], !s->reload_failure);
1487 s->reload_failure = false;
034c6ed7
LP		 1488}
1489
a16e1123
LP		 1490static int service_coldplug(Unit *u) {
1491 Service *s = SERVICE(u);
1492 int r;
1493
1494 assert(s);
1495 assert(s->state == SERVICE_DEAD);
1496
1497 if (s->deserialized_state != s->state) {
1498
1499 if (s->deserialized_state == SERVICE_START_PRE ||
1500 s->deserialized_state == SERVICE_START ||
1501 s->deserialized_state == SERVICE_START_POST ||
1502 s->deserialized_state == SERVICE_RELOAD ||
1503 s->deserialized_state == SERVICE_STOP ||
1504 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1505 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1506 s->deserialized_state == SERVICE_STOP_POST ||
1507 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1508 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
e558336f
LP		 1509 s->deserialized_state == SERVICE_AUTO_RESTART) {
1510
1511 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1512 usec_t k;
1513
1514 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1515
1516 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1517 return r;
1518 }
1519 }
a16e1123
LP		 1520
1521 if ((s->deserialized_state == SERVICE_START &&
1522 (s->type == SERVICE_FORKING ||
8c47c732 1523 s->type == SERVICE_DBUS ||
34e9ba66 1524 s->type == SERVICE_ONESHOT ||
8c47c732 1525 s->type == SERVICE_NOTIFY)) ||
a16e1123
LP		 1526 s->deserialized_state == SERVICE_START_POST ||
1527 s->deserialized_state == SERVICE_RUNNING ||
1528 s->deserialized_state == SERVICE_RELOAD ||
1529 s->deserialized_state == SERVICE_STOP ||
1530 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1531 s->deserialized_state == SERVICE_STOP_SIGKILL)
1532 if (s->main_pid > 0)
1533 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1534 return r;
1535
1536 if (s->deserialized_state == SERVICE_START_PRE ||
1537 s->deserialized_state == SERVICE_START ||
1538 s->deserialized_state == SERVICE_START_POST ||
1539 s->deserialized_state == SERVICE_RELOAD ||
1540 s->deserialized_state == SERVICE_STOP ||
1541 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1542 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1543 s->deserialized_state == SERVICE_STOP_POST ||
1544 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1545 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1546 if (s->control_pid > 0)
1547 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1548 return r;
1549
1550 service_set_state(s, s->deserialized_state);
1551 }
1552
1553 return 0;
1554}
1555
44d8db9e
LP		 1556static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1557 Iterator i;
1558 int r;
1559 int *rfds = NULL;
1560 unsigned rn_fds = 0;
57020a3a 1561 Unit *u;
44d8db9e
LP		 1562
1563 assert(s);
1564 assert(fds);
1565 assert(n_fds);
1566
6cf6bbc2
LP		 1567 if (s->socket_fd >= 0)
1568 return 0;
1569
1124fe6f 1570 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
44d8db9e
LP		 1571 int *cfds;
1572 unsigned cn_fds;
57020a3a
LP		 1573 Socket *sock;
1574
ac155bb8 1575 if (u->type != UNIT_SOCKET)
57020a3a
LP		 1576 continue;
1577
1578 sock = SOCKET(u);
44d8db9e 1579
47be870b 1580 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
44d8db9e
LP		 1581 goto fail;
1582
1583 if (!cfds)
1584 continue;
1585
1586 if (!rfds) {
1587 rfds = cfds;
1588 rn_fds = cn_fds;
1589 } else {
1590 int *t;
1591
1592 if (!(t = new(int, rn_fds+cn_fds))) {
1593 free(cfds);
1594 r = -ENOMEM;
1595 goto fail;
1596 }
1597
9c1b183c
LP		 1598 memcpy(t, rfds, rn_fds * sizeof(int));
1599 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
44d8db9e
LP		 1600 free(rfds);
1601 free(cfds);
1602
1603 rfds = t;
1604 rn_fds = rn_fds+cn_fds;
1605 }
1606 }
1607
1608 *fds = rfds;
1609 *n_fds = rn_fds;
3e33402a 1610
44d8db9e
LP		 1611 return 0;
1612
1613fail:
1614 free(rfds);
3e33402a 1615
44d8db9e
LP		 1616 return r;
1617}
1618
81a2b7ce
LP		 1619static int service_spawn(
1620 Service *s,
1621 ExecCommand *c,
1622 bool timeout,
1623 bool pass_fds,
1624 bool apply_permissions,
1625 bool apply_chroot,
1e3ad081 1626 bool apply_tty_stdin,
c952c6ec 1627 bool set_notify_socket,
81a2b7ce
LP		 1628 pid_t *_pid) {
1629
034c6ed7
LP		 1630 pid_t pid;
1631 int r;
6cf6bbc2 1632 int *fds = NULL, *fdsbuf = NULL;
2105e76a
LP		 1633 unsigned n_fds = 0, n_env = 0;
1634 char **argv = NULL, **final_env = NULL, **our_env = NULL;
034c6ed7
LP		 1635
1636 assert(s);
1637 assert(c);
1638 assert(_pid);
1639
6cf6bbc2
LP		 1640 if (pass_fds ||
1641 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1642 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1643 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1644
4f2d528d
LP		 1645 if (s->socket_fd >= 0) {
1646 fds = &s->socket_fd;
1647 n_fds = 1;
6cf6bbc2
LP		 1648 } else {
1649 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1650 goto fail;
1651
1652 fds = fdsbuf;
1653 }
4f2d528d 1654 }
44d8db9e 1655
e558336f 1656 if (timeout && s->timeout_usec) {
acbb0225 1657 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1658 goto fail;
1659 } else
acbb0225 1660 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1661
9e2f7c11
LP		 1662 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1663 r = -ENOMEM;
1664 goto fail;
1665 }
1666
9865f3b4 1667 if (!(our_env = new0(char*, 4))) {
2105e76a
LP		 1668 r = -ENOMEM;
1669 goto fail;
1670 }
c952c6ec 1671
2105e76a 1672 if (set_notify_socket)
1124fe6f 1673 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) {
c952c6ec
LP		 1674 r = -ENOMEM;
1675 goto fail;
1676 }
1677
2105e76a
LP		 1678 if (s->main_pid > 0)
1679 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
c952c6ec
LP		 1680 r = -ENOMEM;
1681 goto fail;
1682 }
2105e76a
LP		 1683
1684 if (!(final_env = strv_env_merge(2,
1124fe6f 1685 UNIT(s)->manager->environment,
2105e76a
LP		 1686 our_env,
1687 NULL))) {
1688 r = -ENOMEM;
1689 goto fail;
1690 }
c952c6ec 1691
9e2f7c11
LP		 1692 r = exec_spawn(c,
1693 argv,
1694 &s->exec_context,
1695 fds, n_fds,
2105e76a 1696 final_env,
9e2f7c11
LP		 1697 apply_permissions,
1698 apply_chroot,
1e3ad081 1699 apply_tty_stdin,
1124fe6f
MS		 1700 UNIT(s)->manager->confirm_spawn,
1701 UNIT(s)->cgroup_bondings,
1702 UNIT(s)->cgroup_attributes,
9e2f7c11
LP		 1703 &pid);
1704
9e2f7c11 1705 if (r < 0)
034c6ed7
LP		 1706 goto fail;
1707
4f2d528d 1708
87f0e418 1709 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
034c6ed7
LP		 1710 /* FIXME: we need to do something here */
1711 goto fail;
1712
2105e76a
LP		 1713 free(fdsbuf);
1714 strv_free(argv);
1715 strv_free(our_env);
1716 strv_free(final_env);
1717
034c6ed7
LP		 1718 *_pid = pid;
1719
5cb5a6ff 1720 return 0;
034c6ed7
LP		 1721
1722fail:
2105e76a 1723 free(fdsbuf);
c952c6ec 1724 strv_free(argv);
2105e76a
LP		 1725 strv_free(our_env);
1726 strv_free(final_env);
c952c6ec 1727
034c6ed7 1728 if (timeout)
acbb0225 1729 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7
LP		 1730
1731 return r;
1732}
1733
80876c20
LP		 1734static int main_pid_good(Service *s) {
1735 assert(s);
1736
1737 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1738 * don't know */
1739
1740 /* If we know the pid file, then lets just check if it is
1741 * still valid */
6dfa5494
LP		 1742 if (s->main_pid_known) {
1743
1744 /* If it's an alien child let's check if it is still
1745 * alive ... */
1746 if (s->main_pid_alien)
1747 return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
1748
1749 /* .. otherwise assume we'll get a SIGCHLD for it,
1750 * which we really should wait for to collect exit
1751 * status and code */
80876c20 1752 return s->main_pid > 0;
6dfa5494 1753 }
80876c20
LP		 1754
1755 /* We don't know the pid */
1756 return -EAGAIN;
1757}
1758
1759static int control_pid_good(Service *s) {
1760 assert(s);
1761
1762 return s->control_pid > 0;
1763}
1764
1765static int cgroup_good(Service *s) {
1766 int r;
1767
1768 assert(s);
1769
1124fe6f 1770 if ((r = cgroup_bonding_is_empty_list(UNIT(s)->cgroup_bondings)) < 0)
80876c20
LP		 1771 return r;
1772
1773 return !r;
1774}
1775
034c6ed7
LP		 1776static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1777 int r;
1778 assert(s);
1779
1780 if (!success)
1781 s->failure = true;
1782
1783 if (allow_restart &&
47342320 1784 !s->forbid_restart &&
034c6ed7 1785 (s->restart == SERVICE_RESTART_ALWAYS ||
50caaedb
LP		 1786 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure) ||
1787 (s->restart == SERVICE_RESTART_ON_FAILURE && s->failure) ||
1788 (s->restart == SERVICE_RESTART_ON_ABORT && s->failure &&
1789 (s->main_exec_status.code == CLD_KILLED ||
1790 s->main_exec_status.code == CLD_DUMPED)))) {
034c6ed7 1791
acbb0225 1792 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1793 goto fail;
1794
1795 service_set_state(s, SERVICE_AUTO_RESTART);
1796 } else
fdf20a31 1797 service_set_state(s, s->failure ? SERVICE_FAILED : SERVICE_DEAD);
034c6ed7 1798
47342320
LP		 1799 s->forbid_restart = false;
1800
034c6ed7
LP		 1801 return;
1802
1803fail:
1124fe6f 1804 log_warning("%s failed to run install restart timer: %s", UNIT(s)->id, strerror(-r));
034c6ed7
LP		 1805 service_enter_dead(s, false, false);
1806}
1807
1808static void service_enter_signal(Service *s, ServiceState state, bool success);
1809
1810static void service_enter_stop_post(Service *s, bool success) {
1811 int r;
1812 assert(s);
1813
1814 if (!success)
1815 s->failure = true;
1816
5e94833f
LP		 1817 service_unwatch_control_pid(s);
1818
80876c20 1819 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
867b3b7d
LP		 1820 s->control_command_id = SERVICE_EXEC_STOP_POST;
1821
81a2b7ce
LP		 1822 if ((r = service_spawn(s,
1823 s->control_command,
1824 true,
1825 false,
1826 !s->permissions_start_only,
1827 !s->root_directory_start_only,
1e3ad081 1828 true,
c952c6ec 1829 false,
81a2b7ce 1830 &s->control_pid)) < 0)
034c6ed7
LP		 1831 goto fail;
1832
d6ea93e3 1833
80876c20
LP		 1834 service_set_state(s, SERVICE_STOP_POST);
1835 } else
1836 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
034c6ed7
LP		 1837
1838 return;
1839
1840fail:
1124fe6f 1841 log_warning("%s failed to run 'stop-post' task: %s", UNIT(s)->id, strerror(-r));
034c6ed7
LP		 1842 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1843}
1844
1845static void service_enter_signal(Service *s, ServiceState state, bool success) {
1846 int r;
ca949c9d
LP		 1847 Set *pid_set = NULL;
1848 bool wait_for_exit = false;
034c6ed7
LP		 1849
1850 assert(s);
1851
1852 if (!success)
1853 s->failure = true;
1854
2e22afe9
LP		 1855 if (s->exec_context.kill_mode != KILL_NONE) {
1856 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
034c6ed7 1857
ca949c9d 1858 if (s->main_pid > 0) {
cd25cce9 1859 if (kill_and_sigcont(s->main_pid, sig) < 0 && errno != ESRCH)
ca949c9d
LP		 1860 log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
1861 else
6dfa5494 1862 wait_for_exit = !s->main_pid_alien;
034c6ed7
LP		 1863 }
1864
ca949c9d 1865 if (s->control_pid > 0) {
cd25cce9 1866 if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH)
ca949c9d
LP		 1867 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1868 else
1869 wait_for_exit = true;
1870 }
50159e6a 1871
ca949c9d 1872 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
50159e6a 1873
ca949c9d
LP		 1874 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1875 r = -ENOMEM;
50159e6a 1876 goto fail;
ca949c9d
LP		 1877 }
1878
1879 /* Exclude the main/control pids from being killed via the cgroup */
1880 if (s->main_pid > 0)
1881 if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
1882 goto fail;
1883
1884 if (s->control_pid > 0)
1885 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1886 goto fail;
1887
1124fe6f 1888 if ((r = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, sig, true, pid_set)) < 0) {
ca949c9d
LP		 1889 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
1890 log_warning("Failed to kill control group: %s", strerror(-r));
f5a50114 1891 } else if (r > 0)
ca949c9d
LP		 1892 wait_for_exit = true;
1893
1894 set_free(pid_set);
da19d5c1 1895 pid_set = NULL;
50159e6a 1896 }
d6ea93e3 1897 }
034c6ed7 1898
ca949c9d 1899 if (wait_for_exit) {
e558336f
LP		 1900 if (s->timeout_usec > 0)
1901 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1902 goto fail;
d6ea93e3 1903
80876c20
LP		 1904 service_set_state(s, state);
1905 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1906 service_enter_stop_post(s, true);
1907 else
034c6ed7
LP		 1908 service_enter_dead(s, true, true);
1909
1910 return;
1911
1912fail:
1124fe6f 1913 log_warning("%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
034c6ed7 1914
80876c20 1915 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
034c6ed7
LP		 1916 service_enter_stop_post(s, false);
1917 else
1918 service_enter_dead(s, false, true);
ca949c9d
LP		 1919
1920 if (pid_set)
1921 set_free(pid_set);
034c6ed7
LP		 1922}
1923
1924static void service_enter_stop(Service *s, bool success) {
1925 int r;
5925dd3c 1926
034c6ed7
LP		 1927 assert(s);
1928
1929 if (!success)
1930 s->failure = true;
1931
5e94833f
LP		 1932 service_unwatch_control_pid(s);
1933
80876c20 1934 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
867b3b7d
LP		 1935 s->control_command_id = SERVICE_EXEC_STOP;
1936
81a2b7ce
LP		 1937 if ((r = service_spawn(s,
1938 s->control_command,
1939 true,
1940 false,
1941 !s->permissions_start_only,
1942 !s->root_directory_start_only,
c952c6ec 1943 false,
1e3ad081 1944 false,
e55224ca 1945 &s->control_pid)) < 0)
034c6ed7
LP		 1946 goto fail;
1947
80876c20
LP		 1948 service_set_state(s, SERVICE_STOP);
1949 } else
034c6ed7
LP		 1950 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1951
1952 return;
1953
1954fail:
1124fe6f 1955 log_warning("%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r));
034c6ed7
LP		 1956 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1957}
1958
80876c20 1959static void service_enter_running(Service *s, bool success) {
4eab639f 1960 int main_pid_ok, cgroup_ok;
80876c20
LP		 1961 assert(s);
1962
1963 if (!success)
1964 s->failure = true;
1965
4eab639f
LP		 1966 main_pid_ok = main_pid_good(s);
1967 cgroup_ok = cgroup_good(s);
1968
1969 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
05e343b7 1970 (s->bus_name_good || s->type != SERVICE_DBUS))
80876c20 1971 service_set_state(s, SERVICE_RUNNING);
02ee865a 1972 else if (s->remain_after_exit)
80876c20
LP		 1973 service_set_state(s, SERVICE_EXITED);
1974 else
1975 service_enter_stop(s, true);
1976}
1977
034c6ed7
LP		 1978static void service_enter_start_post(Service *s) {
1979 int r;
1980 assert(s);
1981
5e94833f
LP		 1982 service_unwatch_control_pid(s);
1983
80876c20 1984 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
867b3b7d
LP		 1985 s->control_command_id = SERVICE_EXEC_START_POST;
1986
81a2b7ce
LP		 1987 if ((r = service_spawn(s,
1988 s->control_command,
1989 true,
1990 false,
1991 !s->permissions_start_only,
1992 !s->root_directory_start_only,
c952c6ec 1993 false,
1e3ad081 1994 false,
e55224ca 1995 &s->control_pid)) < 0)
034c6ed7
LP		 1996 goto fail;
1997
80876c20
LP		 1998 service_set_state(s, SERVICE_START_POST);
1999 } else
2000 service_enter_running(s, true);
034c6ed7
LP		 2001
2002 return;
2003
2004fail:
1124fe6f 2005 log_warning("%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
034c6ed7
LP		 2006 service_enter_stop(s, false);
2007}
2008
2009static void service_enter_start(Service *s) {
2010 pid_t pid;
2011 int r;
867b3b7d 2012 ExecCommand *c;
034c6ed7
LP		 2013
2014 assert(s);
2015
2016 assert(s->exec_command[SERVICE_EXEC_START]);
34e9ba66 2017 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
034c6ed7 2018
80876c20
LP		 2019 if (s->type == SERVICE_FORKING)
2020 service_unwatch_control_pid(s);
2021 else
2022 service_unwatch_main_pid(s);
2023
8f53a7b8
LP		 2024 /* We want to ensure that nobody leaks processes from
2025 * START_PRE here, so let's go on a killing spree, People
2026 * should not spawn long running processes from START_PRE. */
1124fe6f 2027 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, NULL);
8f53a7b8 2028
867b3b7d
LP		 2029 if (s->type == SERVICE_FORKING) {
2030 s->control_command_id = SERVICE_EXEC_START;
2031 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2032
2033 s->main_command = NULL;
2034 } else {
2035 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2036 s->control_command = NULL;
2037
2038 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2039 }
34e9ba66 2040
81a2b7ce 2041 if ((r = service_spawn(s,
867b3b7d 2042 c,
8c47c732 2043 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
81a2b7ce
LP		 2044 true,
2045 true,
2046 true,
1e3ad081 2047 true,
c952c6ec 2048 s->notify_access != NOTIFY_NONE,
81a2b7ce 2049 &pid)) < 0)
034c6ed7
LP		 2050 goto fail;
2051
2052 if (s->type == SERVICE_SIMPLE) {
2053 /* For simple services we immediately start
2054 * the START_POST binaries. */
2055
5925dd3c 2056 service_set_main_pid(s, pid);
034c6ed7
LP		 2057 service_enter_start_post(s);
2058
2059 } else if (s->type == SERVICE_FORKING) {
2060
2061 /* For forking services we wait until the start
2062 * process exited. */
2063
e55224ca 2064 s->control_pid = pid;
80876c20
LP		 2065 service_set_state(s, SERVICE_START);
2066
34e9ba66 2067 } else if (s->type == SERVICE_ONESHOT ||
8c47c732
LP		 2068 s->type == SERVICE_DBUS ||
2069 s->type == SERVICE_NOTIFY) {
7d55e835 2070
34e9ba66 2071 /* For oneshot services we wait until the start
7d55e835
LP		 2072 * process exited, too, but it is our main process. */
2073
05e343b7 2074 /* For D-Bus services we know the main pid right away,
8c47c732
LP		 2075 * but wait for the bus name to appear on the
2076 * bus. Notify services are similar. */
05e343b7 2077
5925dd3c 2078 service_set_main_pid(s, pid);
80876c20 2079 service_set_state(s, SERVICE_START);
034c6ed7
LP		 2080 } else
2081 assert_not_reached("Unknown service type");
2082
2083 return;
2084
2085fail:
1124fe6f 2086 log_warning("%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r));
80876c20 2087 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 2088}
2089
2090static void service_enter_start_pre(Service *s) {
2091 int r;
2092
2093 assert(s);
2094
5e94833f
LP		 2095 service_unwatch_control_pid(s);
2096
80876c20 2097 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
8f53a7b8
LP		 2098
2099 /* Before we start anything, let's clear up what might
2100 * be left from previous runs. */
1124fe6f 2101 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, NULL);
8f53a7b8 2102
867b3b7d
LP		 2103 s->control_command_id = SERVICE_EXEC_START_PRE;
2104
81a2b7ce
LP		 2105 if ((r = service_spawn(s,
2106 s->control_command,
2107 true,
2108 false,
2109 !s->permissions_start_only,
2110 !s->root_directory_start_only,
1e3ad081 2111 true,
c952c6ec 2112 false,
e55224ca 2113 &s->control_pid)) < 0)
034c6ed7
LP		 2114 goto fail;
2115
80876c20
LP		 2116 service_set_state(s, SERVICE_START_PRE);
2117 } else
034c6ed7
LP		 2118 service_enter_start(s);
2119
2120 return;
2121
2122fail:
1124fe6f 2123 log_warning("%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
034c6ed7
LP		 2124 service_enter_dead(s, false, true);
2125}
2126
2127static void service_enter_restart(Service *s) {
2128 int r;
398ef8ba
LP		 2129 DBusError error;
2130
034c6ed7 2131 assert(s);
398ef8ba 2132 dbus_error_init(&error);
034c6ed7 2133
1124fe6f 2134 if (UNIT(s)->job) {
2edfa366
LP		 2135 log_info("Job pending for unit, delaying automatic restart.");
2136
2137 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
2138 goto fail;
2139 }
2140
9ea9a0c8
LP		 2141 service_enter_dead(s, true, false);
2142
1124fe6f 2143 if ((r = manager_add_job(UNIT(s)->manager, JOB_START, UNIT(s), JOB_FAIL, false, &error, NULL)) < 0)
034c6ed7
LP		 2144 goto fail;
2145
1124fe6f 2146 log_debug("%s scheduled restart job.", UNIT(s)->id);
034c6ed7
LP		 2147 return;
2148
2149fail:
1124fe6f 2150 log_warning("%s failed to schedule restart job: %s", UNIT(s)->id, bus_error(&error, -r));
034c6ed7 2151 service_enter_dead(s, false, false);
398ef8ba
LP		 2152
2153 dbus_error_free(&error);
034c6ed7
LP		 2154}
2155
2156static void service_enter_reload(Service *s) {
2157 int r;
2158
2159 assert(s);
2160
5e94833f
LP		 2161 service_unwatch_control_pid(s);
2162
80876c20 2163 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
867b3b7d
LP		 2164 s->control_command_id = SERVICE_EXEC_RELOAD;
2165
81a2b7ce
LP		 2166 if ((r = service_spawn(s,
2167 s->control_command,
2168 true,
2169 false,
2170 !s->permissions_start_only,
2171 !s->root_directory_start_only,
c952c6ec 2172 false,
1e3ad081 2173 false,
e55224ca 2174 &s->control_pid)) < 0)
034c6ed7
LP		 2175 goto fail;
2176
80876c20
LP		 2177 service_set_state(s, SERVICE_RELOAD);
2178 } else
2179 service_enter_running(s, true);
034c6ed7
LP		 2180
2181 return;
2182
2183fail:
1124fe6f 2184 log_warning("%s failed to run 'reload' task: %s", UNIT(s)->id, strerror(-r));
e2f3b44c
LP		 2185 s->reload_failure = true;
2186 service_enter_running(s, true);
034c6ed7
LP		 2187}
2188
34e9ba66 2189static void service_run_next_control(Service *s, bool success) {
034c6ed7
LP		 2190 int r;
2191
2192 assert(s);
2193 assert(s->control_command);
2194 assert(s->control_command->command_next);
2195
2196 if (!success)
2197 s->failure = true;
2198
34e9ba66 2199 assert(s->control_command_id != SERVICE_EXEC_START);
034c6ed7 2200
34e9ba66 2201 s->control_command = s->control_command->command_next;
5e94833f
LP		 2202 service_unwatch_control_pid(s);
2203
81a2b7ce
LP		 2204 if ((r = service_spawn(s,
2205 s->control_command,
2206 true,
2207 false,
2208 !s->permissions_start_only,
2209 !s->root_directory_start_only,
5830833f
LP		 2210 s->control_command_id == SERVICE_EXEC_START_PRE ||
2211 s->control_command_id == SERVICE_EXEC_STOP_POST,
1e3ad081 2212 false,
e55224ca 2213 &s->control_pid)) < 0)
034c6ed7
LP		 2214 goto fail;
2215
2216 return;
2217
2218fail:
1124fe6f 2219 log_warning("%s failed to run next control task: %s", UNIT(s)->id, strerror(-r));
034c6ed7 2220
80876c20
LP		 2221 if (s->state == SERVICE_START_PRE)
2222 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2223 else if (s->state == SERVICE_STOP)
2224 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
034c6ed7
LP		 2225 else if (s->state == SERVICE_STOP_POST)
2226 service_enter_dead(s, false, true);
e2f3b44c
LP		 2227 else if (s->state == SERVICE_RELOAD) {
2228 s->reload_failure = true;
2229 service_enter_running(s, true);
2230 } else
034c6ed7 2231 service_enter_stop(s, false);
5cb5a6ff
LP		 2232}
2233
34e9ba66
LP		 2234static void service_run_next_main(Service *s, bool success) {
2235 pid_t pid;
2236 int r;
2237
2238 assert(s);
867b3b7d
LP		 2239 assert(s->main_command);
2240 assert(s->main_command->command_next);
2241 assert(s->type == SERVICE_ONESHOT);
34e9ba66
LP		 2242
2243 if (!success)
2244 s->failure = true;
2245
867b3b7d 2246 s->main_command = s->main_command->command_next;
34e9ba66
LP		 2247 service_unwatch_main_pid(s);
2248
2249 if ((r = service_spawn(s,
867b3b7d 2250 s->main_command,
34e9ba66
LP		 2251 false,
2252 true,
2253 true,
2254 true,
2255 true,
2256 s->notify_access != NOTIFY_NONE,
2257 &pid)) < 0)
2258 goto fail;
2259
2260 service_set_main_pid(s, pid);
2261
2262 return;
2263
2264fail:
1124fe6f 2265 log_warning("%s failed to run next main task: %s", UNIT(s)->id, strerror(-r));
34e9ba66
LP		 2266 service_enter_stop(s, false);
2267}
2268
87f0e418
LP		 2269static int service_start(Unit *u) {
2270 Service *s = SERVICE(u);
5cb5a6ff
LP		 2271
2272 assert(s);
2273
034c6ed7
LP		 2274 /* We cannot fulfill this request right now, try again later
2275 * please! */
2276 if (s->state == SERVICE_STOP ||
2277 s->state == SERVICE_STOP_SIGTERM ||
2278 s->state == SERVICE_STOP_SIGKILL ||
2279 s->state == SERVICE_STOP_POST ||
2280 s->state == SERVICE_FINAL_SIGTERM ||
2281 s->state == SERVICE_FINAL_SIGKILL)
5cb5a6ff
LP		 2282 return -EAGAIN;
2283
034c6ed7
LP		 2284 /* Already on it! */
2285 if (s->state == SERVICE_START_PRE ||
2286 s->state == SERVICE_START ||
2287 s->state == SERVICE_START_POST)
2288 return 0;
2289
fdf20a31 2290 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED || s->state == SERVICE_AUTO_RESTART);
5cb5a6ff 2291
1e2e8133
LP		 2292 /* Make sure we don't enter a busy loop of some kind. */
2293 if (!ratelimit_test(&s->ratelimit)) {
ac155bb8 2294 log_warning("%s start request repeated too quickly, refusing to start.", u->id);
d5159713 2295 return -ECANCELED;
1e2e8133
LP		 2296 }
2297
034c6ed7
LP		 2298 s->failure = false;
2299 s->main_pid_known = false;
6dfa5494 2300 s->main_pid_alien = false;
47342320 2301 s->forbid_restart = false;
034c6ed7
LP		 2302
2303 service_enter_start_pre(s);
2304 return 0;
5cb5a6ff
LP		 2305}
2306
87f0e418
LP		 2307static int service_stop(Unit *u) {
2308 Service *s = SERVICE(u);
5cb5a6ff
LP		 2309
2310 assert(s);
2311
3f6c78dc
LP		 2312 /* This is a user request, so don't do restarts on this
2313 * shutdown. */
47342320 2314 s->forbid_restart = true;
034c6ed7 2315
e537352b
LP		 2316 /* Already on it */
2317 if (s->state == SERVICE_STOP ||
2318 s->state == SERVICE_STOP_SIGTERM ||
2319 s->state == SERVICE_STOP_SIGKILL ||
2320 s->state == SERVICE_STOP_POST ||
2321 s->state == SERVICE_FINAL_SIGTERM ||
2322 s->state == SERVICE_FINAL_SIGKILL)
2323 return 0;
2324
3f6c78dc 2325 /* Don't allow a restart */
034c6ed7
LP		 2326 if (s->state == SERVICE_AUTO_RESTART) {
2327 service_set_state(s, SERVICE_DEAD);
2328 return 0;
2329 }
2330
3f6c78dc
LP		 2331 /* If there's already something running we go directly into
2332 * kill mode. */
2333 if (s->state == SERVICE_START_PRE ||
2334 s->state == SERVICE_START ||
2335 s->state == SERVICE_START_POST ||
2336 s->state == SERVICE_RELOAD) {
2337 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
2338 return 0;
2339 }
5cb5a6ff 2340
3f6c78dc
LP		 2341 assert(s->state == SERVICE_RUNNING ||
2342 s->state == SERVICE_EXITED);
3a762661 2343
034c6ed7 2344 service_enter_stop(s, true);
5cb5a6ff
LP		 2345 return 0;
2346}
2347
87f0e418
LP		 2348static int service_reload(Unit *u) {
2349 Service *s = SERVICE(u);
034c6ed7
LP		 2350
2351 assert(s);
2352
80876c20 2353 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
034c6ed7
LP		 2354
2355 service_enter_reload(s);
5cb5a6ff
LP		 2356 return 0;
2357}
2358
87f0e418
LP		 2359static bool service_can_reload(Unit *u) {
2360 Service *s = SERVICE(u);
034c6ed7
LP		 2361
2362 assert(s);
2363
2364 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2365}
2366
a16e1123
LP		 2367static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2368 Service *s = SERVICE(u);
2369
2370 assert(u);
2371 assert(f);
2372 assert(fds);
2373
2374 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2375 unit_serialize_item(u, f, "failure", yes_no(s->failure));
2376
2377 if (s->control_pid > 0)
5925dd3c 2378 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
a16e1123 2379
5925dd3c
LP		 2380 if (s->main_pid_known && s->main_pid > 0)
2381 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
a16e1123
LP		 2382
2383 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2384
3a2776bc
LP		 2385 if (s->status_text)
2386 unit_serialize_item(u, f, "status-text", s->status_text);
2387
a16e1123
LP		 2388 /* There's a minor uncleanliness here: if there are multiple
2389 * commands attached here, we will start from the first one
2390 * again */
2391 if (s->control_command_id >= 0)
825636e5 2392 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
a16e1123
LP		 2393
2394 if (s->socket_fd >= 0) {
2395 int copy;
2396
2397 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2398 return copy;
2399
2400 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2401 }
2402
ecdbca40
LP		 2403 if (s->main_exec_status.pid > 0) {
2404 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
799fd0fd
LP		 2405 dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp);
2406 dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp);
ecdbca40 2407
799fd0fd 2408 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
ecdbca40
LP		 2409 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2410 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2411 }
2412 }
2413
a16e1123
LP		 2414 return 0;
2415}
2416
2417static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2418 Service *s = SERVICE(u);
a16e1123
LP		 2419
2420 assert(u);
2421 assert(key);
2422 assert(value);
2423 assert(fds);
2424
2425 if (streq(key, "state")) {
2426 ServiceState state;
2427
2428 if ((state = service_state_from_string(value)) < 0)
2429 log_debug("Failed to parse state value %s", value);
2430 else
2431 s->deserialized_state = state;
2432 } else if (streq(key, "failure")) {
2433 int b;
2434
2435 if ((b = parse_boolean(value)) < 0)
2436 log_debug("Failed to parse failure value %s", value);
2437 else
2438 s->failure = b || s->failure;
2439 } else if (streq(key, "control-pid")) {
5925dd3c 2440 pid_t pid;
a16e1123 2441
e364ad06 2442 if (parse_pid(value, &pid) < 0)
a16e1123
LP		 2443 log_debug("Failed to parse control-pid value %s", value);
2444 else
e55224ca 2445 s->control_pid = pid;
a16e1123 2446 } else if (streq(key, "main-pid")) {
5925dd3c 2447 pid_t pid;
a16e1123 2448
e364ad06 2449 if (parse_pid(value, &pid) < 0)
a16e1123
LP		 2450 log_debug("Failed to parse main-pid value %s", value);
2451 else
5925dd3c 2452 service_set_main_pid(s, (pid_t) pid);
a16e1123
LP		 2453 } else if (streq(key, "main-pid-known")) {
2454 int b;
2455
2456 if ((b = parse_boolean(value)) < 0)
2457 log_debug("Failed to parse main-pid-known value %s", value);
2458 else
2459 s->main_pid_known = b;
3a2776bc
LP		 2460 } else if (streq(key, "status-text")) {
2461 char *t;
2462
2463 if ((t = strdup(value))) {
2464 free(s->status_text);
2465 s->status_text = t;
2466 }
2467
a16e1123
LP		 2468 } else if (streq(key, "control-command")) {
2469 ServiceExecCommand id;
2470
2471 if ((id = service_exec_command_from_string(value)) < 0)
2472 log_debug("Failed to parse exec-command value %s", value);
2473 else {
2474 s->control_command_id = id;
2475 s->control_command = s->exec_command[id];
2476 }
2477 } else if (streq(key, "socket-fd")) {
2478 int fd;
2479
2480 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2481 log_debug("Failed to parse socket-fd value %s", value);
2482 else {
2483
2484 if (s->socket_fd >= 0)
2485 close_nointr_nofail(s->socket_fd);
2486 s->socket_fd = fdset_remove(fds, fd);
2487 }
ecdbca40
LP		 2488 } else if (streq(key, "main-exec-status-pid")) {
2489 pid_t pid;
2490
e364ad06 2491 if (parse_pid(value, &pid) < 0)
ecdbca40
LP		 2492 log_debug("Failed to parse main-exec-status-pid value %s", value);
2493 else
2494 s->main_exec_status.pid = pid;
2495 } else if (streq(key, "main-exec-status-code")) {
2496 int i;
2497
e364ad06 2498 if (safe_atoi(value, &i) < 0)
ecdbca40
LP		 2499 log_debug("Failed to parse main-exec-status-code value %s", value);
2500 else
2501 s->main_exec_status.code = i;
2502 } else if (streq(key, "main-exec-status-status")) {
2503 int i;
2504
e364ad06 2505 if (safe_atoi(value, &i) < 0)
ecdbca40
LP		 2506 log_debug("Failed to parse main-exec-status-status value %s", value);
2507 else
2508 s->main_exec_status.status = i;
799fd0fd
LP		 2509 } else if (streq(key, "main-exec-status-start"))
2510 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2511 else if (streq(key, "main-exec-status-exit"))
2512 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2513 else
a16e1123
LP		 2514 log_debug("Unknown serialization key '%s'", key);
2515
2516 return 0;
2517}
2518
87f0e418
LP		 2519static UnitActiveState service_active_state(Unit *u) {
2520 assert(u);
5cb5a6ff 2521
acbb0225 2522 return state_translation_table[SERVICE(u)->state];
034c6ed7
LP		 2523}
2524
10a94420
LP		 2525static const char *service_sub_state_to_string(Unit *u) {
2526 assert(u);
2527
2528 return service_state_to_string(SERVICE(u)->state);
2529}
2530
701cc384
LP		 2531static bool service_check_gc(Unit *u) {
2532 Service *s = SERVICE(u);
2533
2534 assert(s);
2535
6d55002a
LP		 2536 /* Never clean up services that still have a process around,
2537 * even if the service is formally dead. */
2538 if (cgroup_good(s) > 0 ||
2539 main_pid_good(s) > 0 ||
2540 control_pid_good(s) > 0)
2541 return true;
2542
2543#ifdef HAVE_SYSV_COMPAT
2544 if (s->sysv_path)
2545 return true;
07459bb6 2546#endif
701cc384 2547
6d55002a
LP		 2548 return false;
2549}
2550
701cc384
LP		 2551static bool service_check_snapshot(Unit *u) {
2552 Service *s = SERVICE(u);
2553
2554 assert(s);
2555
2556 return !s->got_socket_fd;
2557}
2558
3a111838
MS		 2559static int service_retry_pid_file(Service *s) {
2560 int r;
2561
2562 assert(s->pid_file);
2563 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2564
2565 r = service_load_pid_file(s, false);
2566 if (r < 0)
2567 return r;
2568
2569 service_unwatch_pid_file(s);
2570
2571 service_enter_running(s, true);
2572 return 0;
2573}
2574
2575static int service_watch_pid_file(Service *s) {
2576 int r;
2577
1124fe6f 2578 log_debug("Setting watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path);
57020a3a 2579 r = path_spec_watch(s->pid_file_pathspec, UNIT(s));
3a111838
MS		 2580 if (r < 0)
2581 goto fail;
2582
2583 /* the pidfile might have appeared just before we set the watch */
2584 service_retry_pid_file(s);
2585
2586 return 0;
2587fail:
2588 log_error("Failed to set a watch for %s's PID file %s: %s",
1124fe6f 2589 UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r));
3a111838
MS		 2590 service_unwatch_pid_file(s);
2591 return r;
2592}
2593
2594static int service_demand_pid_file(Service *s) {
2595 PathSpec *ps;
2596
2597 assert(s->pid_file);
2598 assert(!s->pid_file_pathspec);
2599
2600 ps = new0(PathSpec, 1);
2601 if (!ps)
2602 return -ENOMEM;
2603
2604 ps->path = strdup(s->pid_file);
2605 if (!ps->path) {
2606 free(ps);
2607 return -ENOMEM;
2608 }
2609
2610 path_kill_slashes(ps->path);
2611
2612 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2613 * keep their PID file open all the time. */
2614 ps->type = PATH_MODIFIED;
2615 ps->inotify_fd = -1;
2616
2617 s->pid_file_pathspec = ps;
2618
2619 return service_watch_pid_file(s);
2620}
2621
2622static void service_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
2623 Service *s = SERVICE(u);
2624
2625 assert(s);
2626 assert(fd >= 0);
2627 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2628 assert(s->pid_file_pathspec);
57020a3a 2629 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
3a111838 2630
ac155bb8 2631 log_debug("inotify event for %s", u->id);
3a111838 2632
57020a3a 2633 if (path_spec_fd_event(s->pid_file_pathspec, events) < 0)
3a111838
MS		 2634 goto fail;
2635
2636 if (service_retry_pid_file(s) == 0)
2637 return;
2638
2639 if (service_watch_pid_file(s) < 0)
2640 goto fail;
2641
2642 return;
2643fail:
2644 service_unwatch_pid_file(s);
2645 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2646}
2647
87f0e418
LP		 2648static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2649 Service *s = SERVICE(u);
034c6ed7 2650 bool success;
5cb5a6ff
LP		 2651
2652 assert(s);
034c6ed7
LP		 2653 assert(pid >= 0);
2654
1124fe6f 2655 if (!UNIT(s)->fragment_path)
d06dacd0
LP		 2656 success = is_clean_exit_lsb(code, status);
2657 else
2658 success = is_clean_exit(code, status);
034c6ed7
LP		 2659
2660 if (s->main_pid == pid) {
db01f8b3
MS		 2661 /* Forking services may occasionally move to a new PID.
2662 * As long as they update the PID file before exiting the old
2663 * PID, they're fine. */
5375410b 2664 if (service_load_pid_file(s, false) == 0)
db01f8b3 2665 return;
034c6ed7 2666
034c6ed7 2667 s->main_pid = 0;
6ea832a2 2668 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
034c6ed7 2669
867b3b7d
LP		 2670 /* If this is not a forking service than the main
2671 * process got started and hence we copy the exit
2672 * status so that it is recorded both as main and as
2673 * control process exit status */
2674 if (s->main_command) {
2675 s->main_command->exec_status = s->main_exec_status;
b708e7ce 2676
867b3b7d 2677 if (s->main_command->ignore)
b708e7ce 2678 success = true;
034c6ed7
LP		 2679 }
2680
92abbefb 2681 log_full(success ? LOG_DEBUG : LOG_NOTICE,
ac155bb8 2682 "%s: main process exited, code=%s, status=%i", u->id, sigchld_code_to_string(code), status);
b708e7ce 2683 s->failure = s->failure || !success;
034c6ed7 2684
867b3b7d
LP		 2685 if (s->main_command &&
2686 s->main_command->command_next &&
34e9ba66 2687 success) {
034c6ed7 2688
34e9ba66
LP		 2689 /* There is another command to *
2690 * execute, so let's do that. */
034c6ed7 2691
ac155bb8 2692 log_debug("%s running next main command for state %s", u->id, service_state_to_string(s->state));
34e9ba66 2693 service_run_next_main(s, success);
034c6ed7 2694
34e9ba66
LP		 2695 } else {
2696
2697 /* The service exited, so the service is officially
2698 * gone. */
867b3b7d 2699 s->main_command = NULL;
34e9ba66
LP		 2700
2701 switch (s->state) {
2702
2703 case SERVICE_START_POST:
2704 case SERVICE_RELOAD:
2705 case SERVICE_STOP:
2706 /* Need to wait until the operation is
2707 * done */
c4653a4d 2708 break;
7d55e835 2709
34e9ba66
LP		 2710 case SERVICE_START:
2711 if (s->type == SERVICE_ONESHOT) {
2712 /* This was our main goal, so let's go on */
2713 if (success)
2714 service_enter_start_post(s);
2715 else
2716 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2717 break;
2718 } else {
2719 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
7d55e835 2720
34e9ba66
LP		 2721 /* Fall through */
2722 }
034c6ed7 2723
34e9ba66
LP		 2724 case SERVICE_RUNNING:
2725 service_enter_running(s, success);
2726 break;
034c6ed7 2727
34e9ba66
LP		 2728 case SERVICE_STOP_SIGTERM:
2729 case SERVICE_STOP_SIGKILL:
5cb5a6ff 2730
34e9ba66
LP		 2731 if (!control_pid_good(s))
2732 service_enter_stop_post(s, success);
5cb5a6ff 2733
34e9ba66
LP		 2734 /* If there is still a control process, wait for that first */
2735 break;
2736
2737 default:
2738 assert_not_reached("Uh, main process died at wrong time.");
2739 }
034c6ed7 2740 }
5cb5a6ff 2741
034c6ed7 2742 } else if (s->control_pid == pid) {
034c6ed7 2743
34e9ba66
LP		 2744 s->control_pid = 0;
2745
b708e7ce 2746 if (s->control_command) {
6ea832a2 2747 exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
a16e1123 2748
b708e7ce
LP		 2749 if (s->control_command->ignore)
2750 success = true;
2751 }
2752
3a111838 2753 log_full(success ? LOG_DEBUG : LOG_NOTICE,
ac155bb8 2754 "%s: control process exited, code=%s status=%i", u->id, sigchld_code_to_string(code), status);
b708e7ce 2755 s->failure = s->failure || !success;
034c6ed7 2756
34e9ba66
LP		 2757 if (s->control_command &&
2758 s->control_command->command_next &&
2759 success) {
034c6ed7
LP		 2760
2761 /* There is another command to *
2762 * execute, so let's do that. */
2763
ac155bb8 2764 log_debug("%s running next control command for state %s", u->id, service_state_to_string(s->state));
34e9ba66 2765 service_run_next_control(s, success);
034c6ed7 2766
80876c20 2767 } else {
034c6ed7
LP		 2768 /* No further commands for this step, so let's
2769 * figure out what to do next */
2770
a16e1123
LP		 2771 s->control_command = NULL;
2772 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2773
ac155bb8 2774 log_debug("%s got final SIGCHLD for state %s", u->id, service_state_to_string(s->state));
bd982a8b 2775
034c6ed7
LP		 2776 switch (s->state) {
2777
2778 case SERVICE_START_PRE:
2779 if (success)
2780 service_enter_start(s);
2781 else
80876c20 2782 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 2783 break;
2784
2785 case SERVICE_START:
2786 assert(s->type == SERVICE_FORKING);
2787
3a111838
MS		 2788 if (!success) {
2789 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2790 break;
2791 }
034c6ed7 2792
3a111838
MS		 2793 if (s->pid_file) {
2794 /* Let's try to load the pid file here if we can.
2795 * The PID file might actually be created by a START_POST
2796 * script. In that case don't worry if the loading fails. */
2797 bool has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
2798 int r = service_load_pid_file(s, !has_start_post);
2799 if (!has_start_post && r < 0) {
2800 r = service_demand_pid_file(s);
2801 if (r < 0 || !cgroup_good(s))
2802 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2803 break;
2804 }
034c6ed7 2805 } else
3a111838 2806 service_search_main_pid(s);
034c6ed7 2807
3a111838 2808 service_enter_start_post(s);
034c6ed7
LP		 2809 break;
2810
2811 case SERVICE_START_POST:
2096e009
MS		 2812 if (!success) {
2813 service_enter_stop(s, false);
2814 break;
034c6ed7
LP		 2815 }
2816
2096e009
MS		 2817 if (s->pid_file) {
2818 int r = service_load_pid_file(s, true);
2819 if (r < 0) {
2820 r = service_demand_pid_file(s);
2821 if (r < 0 || !cgroup_good(s))
2822 service_enter_stop(s, false);
2823 break;
2824 }
2825 } else
2826 service_search_main_pid(s);
2827
3185a36b
LP		 2828 service_enter_running(s, true);
2829 break;
034c6ed7
LP		 2830
2831 case SERVICE_RELOAD:
3185a36b 2832 if (success) {
5375410b 2833 service_load_pid_file(s, true);
3185a36b
LP		 2834 service_search_main_pid(s);
2835 }
2836
e2f3b44c
LP		 2837 s->reload_failure = !success;
2838 service_enter_running(s, true);
034c6ed7
LP		 2839 break;
2840
2841 case SERVICE_STOP:
80876c20 2842 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
034c6ed7
LP		 2843 break;
2844
2845 case SERVICE_STOP_SIGTERM:
2846 case SERVICE_STOP_SIGKILL:
2847 if (main_pid_good(s) <= 0)
2848 service_enter_stop_post(s, success);
2849
2850 /* If there is still a service
2851 * process around, wait until
2852 * that one quit, too */
2853 break;
2854
2855 case SERVICE_STOP_POST:
2856 case SERVICE_FINAL_SIGTERM:
2857 case SERVICE_FINAL_SIGKILL:
2858 service_enter_dead(s, success, true);
2859 break;
2860
2861 default:
2862 assert_not_reached("Uh, control process died at wrong time.");
2863 }
2864 }
8c47c732 2865 }
c4e2ceae
LP		 2866
2867 /* Notify clients about changed exit status */
2868 unit_add_to_dbus_queue(u);
034c6ed7
LP		 2869}
2870
acbb0225 2871static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
87f0e418 2872 Service *s = SERVICE(u);
034c6ed7
LP		 2873
2874 assert(s);
2875 assert(elapsed == 1);
2876
acbb0225 2877 assert(w == &s->timer_watch);
034c6ed7
LP		 2878
2879 switch (s->state) {
2880
2881 case SERVICE_START_PRE:
2882 case SERVICE_START:
ac155bb8 2883 log_warning("%s operation timed out. Terminating.", u->id);
80876c20
LP		 2884 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2885 break;
2886
034c6ed7 2887 case SERVICE_START_POST:
ac155bb8 2888 log_warning("%s operation timed out. Stopping.", u->id);
034c6ed7
LP		 2889 service_enter_stop(s, false);
2890 break;
2891
e2f3b44c 2892 case SERVICE_RELOAD:
ac155bb8 2893 log_warning("%s operation timed out. Stopping.", u->id);
e2f3b44c
LP		 2894 s->reload_failure = true;
2895 service_enter_running(s, true);
2896 break;
2897
034c6ed7 2898 case SERVICE_STOP:
ac155bb8 2899 log_warning("%s stopping timed out. Terminating.", u->id);
034c6ed7
LP		 2900 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2901 break;
2902
2903 case SERVICE_STOP_SIGTERM:
ba035df2 2904 if (s->exec_context.send_sigkill) {
ac155bb8 2905 log_warning("%s stopping timed out. Killing.", u->id);
ba035df2
LP		 2906 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2907 } else {
ac155bb8 2908 log_warning("%s stopping timed out. Skipping SIGKILL.", u->id);
ba035df2
LP		 2909 service_enter_stop_post(s, false);
2910 }
2911
034c6ed7
LP		 2912 break;
2913
2914 case SERVICE_STOP_SIGKILL:
35b8ca3a 2915 /* Uh, we sent a SIGKILL and it is still not gone?
034c6ed7
LP		 2916 * Must be something we cannot kill, so let's just be
2917 * weirded out and continue */
2918
ac155bb8 2919 log_warning("%s still around after SIGKILL. Ignoring.", u->id);
034c6ed7
LP		 2920 service_enter_stop_post(s, false);
2921 break;
2922
2923 case SERVICE_STOP_POST:
ac155bb8 2924 log_warning("%s stopping timed out (2). Terminating.", u->id);
034c6ed7
LP		 2925 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2926 break;
2927
2928 case SERVICE_FINAL_SIGTERM:
ba035df2 2929 if (s->exec_context.send_sigkill) {
ac155bb8 2930 log_warning("%s stopping timed out (2). Killing.", u->id);
ba035df2
LP		 2931 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2932 } else {
ac155bb8 2933 log_warning("%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.", u->id);
ba035df2
LP		 2934 service_enter_dead(s, false, true);
2935 }
2936
034c6ed7
LP		 2937 break;
2938
2939 case SERVICE_FINAL_SIGKILL:
ac155bb8 2940 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->id);
034c6ed7
LP		 2941 service_enter_dead(s, false, true);
2942 break;
2943
2944 case SERVICE_AUTO_RESTART:
ac155bb8 2945 log_info("%s holdoff time over, scheduling restart.", u->id);
034c6ed7
LP		 2946 service_enter_restart(s);
2947 break;
2948
2949 default:
2950 assert_not_reached("Timeout at wrong time.");
2951 }
5cb5a6ff
LP		 2952}
2953
8e274523
LP		 2954static void service_cgroup_notify_event(Unit *u) {
2955 Service *s = SERVICE(u);
2956
2957 assert(u);
2958
ac155bb8 2959 log_debug("%s: cgroup is empty", u->id);
8e274523
LP		 2960
2961 switch (s->state) {
2962
2963 /* Waiting for SIGCHLD is usually more interesting,
2964 * because it includes return codes/signals. Which is
2965 * why we ignore the cgroup events for most cases,
2966 * except when we don't know pid which to expect the
2967 * SIGCHLD for. */
2968
3a111838
MS		 2969 case SERVICE_START:
2970 case SERVICE_START_POST:
2971 /* If we were hoping for the daemon to write its PID file,
2972 * we can give up now. */
2973 if (s->pid_file_pathspec) {
1124fe6f 2974 log_warning("%s never wrote its PID file. Failing.", UNIT(s)->id);
3a111838
MS		 2975 service_unwatch_pid_file(s);
2976 if (s->state == SERVICE_START)
2977 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2978 else
2979 service_enter_stop(s, false);
2980 }
2981 break;
2982
8e274523 2983 case SERVICE_RUNNING:
80876c20 2984 service_enter_running(s, true);
8e274523
LP		 2985 break;
2986
28708d8a
LP		 2987 case SERVICE_STOP_SIGTERM:
2988 case SERVICE_STOP_SIGKILL:
6dfa5494 2989
28708d8a
LP		 2990 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2991 service_enter_stop_post(s, true);
2992
2993 break;
2994
7f97f0fe
LP		 2995 case SERVICE_FINAL_SIGTERM:
2996 case SERVICE_FINAL_SIGKILL:
2997 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2998 service_enter_dead(s, true, true);
2999
3000 break;
3001
8e274523
LP		 3002 default:
3003 ;
3004 }
3005}
3006
c952c6ec 3007static void service_notify_message(Unit *u, pid_t pid, char **tags) {
8c47c732
LP		 3008 Service *s = SERVICE(u);
3009 const char *e;
3010
3011 assert(u);
3012
c952c6ec
LP		 3013 if (s->notify_access == NOTIFY_NONE) {
3014 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
ac155bb8 3015 u->id, (unsigned long) pid);
c952c6ec
LP		 3016 return;
3017 }
3018
3019 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
3020 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
ac155bb8 3021 u->id, (unsigned long) pid, (unsigned long) s->main_pid);
c952c6ec
LP		 3022 return;
3023 }
3024
ac155bb8 3025 log_debug("%s: Got message", u->id);
8c47c732
LP		 3026
3027 /* Interpret MAINPID= */
3028 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
3029 (s->state == SERVICE_START ||
3030 s->state == SERVICE_START_POST ||
3031 s->state == SERVICE_RUNNING ||
3032 s->state == SERVICE_RELOAD)) {
8c47c732 3033
5925dd3c 3034 if (parse_pid(e + 8, &pid) < 0)
92abbefb 3035 log_warning("Failed to parse notification message %s", e);
8c47c732 3036 else {
ac155bb8 3037 log_debug("%s: got %s", u->id, e);
5925dd3c 3038 service_set_main_pid(s, pid);
8c47c732
LP		 3039 }
3040 }
3041
3042 /* Interpret READY= */
3043 if (s->type == SERVICE_NOTIFY &&
3044 s->state == SERVICE_START &&
3045 strv_find(tags, "READY=1")) {
ac155bb8 3046 log_debug("%s: got READY=1", u->id);
8c47c732
LP		 3047
3048 service_enter_start_post(s);
3049 }
3050
3051 /* Interpret STATUS= */
3052 if ((e = strv_find_prefix(tags, "STATUS="))) {
3053 char *t;
3054
3a2776bc
LP		 3055 if (e[7]) {
3056 if (!(t = strdup(e+7))) {
3057 log_error("Failed to allocate string.");
3058 return;
3059 }
3060
ac155bb8 3061 log_debug("%s: got %s", u->id, e);
8c47c732 3062
3a2776bc
LP		 3063 free(s->status_text);
3064 s->status_text = t;
3065 } else {
3066 free(s->status_text);
3067 s->status_text = NULL;
3068 }
8c47c732 3069
8c47c732 3070 }
c4e2ceae
LP		 3071
3072 /* Notify clients about changed status or main pid */
3073 unit_add_to_dbus_queue(u);
8c47c732
LP		 3074}
3075
07459bb6 3076#ifdef HAVE_SYSV_COMPAT
de3910a3
FC		 3077
3078#ifdef TARGET_SUSE
3079static void sysv_facility_in_insserv_conf(Manager *mgr) {
3080 FILE *f=NULL;
3081 int r;
3082
3083 if (!(f = fopen("/etc/insserv.conf", "re"))) {
3084 r = errno == ENOENT ? 0 : -errno;
3085 goto finish;
3086 }
3087
3088 while (!feof(f)) {
3089 char l[LINE_MAX], *t;
3090 char **parsed = NULL;
3091
3092 if (!fgets(l, sizeof(l), f)) {
3093 if (feof(f))
3094 break;
3095
3096 r = -errno;
3097 log_error("Failed to read configuration file '/etc/insserv.conf': %s", strerror(-r));
3098 goto finish;
3099 }
3100
3101 t = strstrip(l);
3102 if (*t != '$' && *t != '<')
3103 continue;
3104
3105 parsed = strv_split(t,WHITESPACE);
3106 /* we ignore <interactive>, not used, equivalent to X-Interactive */
3107 if (parsed && !startswith_no_case (parsed[0], "<interactive>")) {
3108 char *facility;
3109 Unit *u;
3110 if (sysv_translate_facility(parsed[0], NULL, &facility) < 0)
3111 continue;
ac155bb8 3112 if ((u = manager_get_unit(mgr, facility)) && (u->type == UNIT_TARGET)) {
de3910a3
FC		 3113 UnitDependency e;
3114 char *dep = NULL, *name, **j;
3115
3116 STRV_FOREACH (j, parsed+1) {
3117 if (*j[0]=='+') {
3118 e = UNIT_WANTS;
3119 name = *j+1;
3120 }
3121 else {
3122 e = UNIT_REQUIRES;
3123 name = *j;
3124 }
3125 if (sysv_translate_facility(name, NULL, &dep) < 0)
3126 continue;
3127
3128 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, e, dep, NULL, true);
3129 free(dep);
3130 }
3131 }
3132 free(facility);
3133 }
3134 strv_free(parsed);
3135 }
3136finish:
3137 if (f)
3138 fclose(f);
3139
3140}
3141#endif
3142
2c4104f0 3143static int service_enumerate(Manager *m) {
2c4104f0
LP		 3144 char **p;
3145 unsigned i;
3146 DIR *d = NULL;
3147 char *path = NULL, *fpath = NULL, *name = NULL;
c68364b7
LP		 3148 Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
3149 Unit *service;
3150 Iterator j;
2c4104f0
LP		 3151 int r;
3152
3153 assert(m);
3154
b1bc08e5
LP		 3155 if (m->running_as != MANAGER_SYSTEM)
3156 return 0;
3157
c68364b7
LP		 3158 zero(runlevel_services);
3159
84e3543e 3160 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
09cd1ab1 3161 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2c4104f0
LP		 3162 struct dirent *de;
3163
3164 free(path);
70132bd0
LP		 3165 path = join(*p, "/", rcnd_table[i].path, NULL);
3166 if (!path) {
2c4104f0
LP		 3167 r = -ENOMEM;
3168 goto finish;
3169 }
3170
3171 if (d)
3172 closedir(d);
3173
3174 if (!(d = opendir(path))) {
3175 if (errno != ENOENT)
3176 log_warning("opendir() failed on %s: %s", path, strerror(errno));
3177
3178 continue;
3179 }
3180
3181 while ((de = readdir(d))) {
db06e3b6 3182 int a, b;
2c4104f0
LP		 3183
3184 if (ignore_file(de->d_name))
3185 continue;
3186
3187 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3188 continue;
3189
3190 if (strlen(de->d_name) < 4)
3191 continue;
3192
db06e3b6
LP		 3193 a = undecchar(de->d_name[1]);
3194 b = undecchar(de->d_name[2]);
3195
3196 if (a < 0 || b < 0)
3197 continue;
3198
2c4104f0 3199 free(fpath);
44d91056 3200 fpath = join(path, "/", de->d_name, NULL);
8ea913b2 3201 if (!fpath) {
2c4104f0
LP		 3202 r = -ENOMEM;
3203 goto finish;
3204 }
3205
3206 if (access(fpath, X_OK) < 0) {
3207
3208 if (errno != ENOENT)
3209 log_warning("access() failed on %s: %s", fpath, strerror(errno));
3210
3211 continue;
3212 }
3213
3214 free(name);
b7ccee3c 3215 if (!(name = sysv_translate_name(de->d_name + 3))) {
2c4104f0
LP		 3216 r = -ENOMEM;
3217 goto finish;
3218 }
3219
398ef8ba 3220 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
fbe9f3a9
LP		 3221 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3222 continue;
3223 }
2c4104f0 3224
c68364b7
LP		 3225 if (de->d_name[0] == 'S') {
3226
f73d93a4 3227 if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) {
ea87ca5a
LP		 3228 SERVICE(service)->sysv_start_priority_from_rcnd =
3229 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
db06e3b6 3230
c68364b7 3231 SERVICE(service)->sysv_enabled = true;
f73d93a4 3232 }
db06e3b6 3233
c68364b7
LP		 3234 if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
3235 goto finish;
2c4104f0 3236
c68364b7 3237 if ((r = set_put(runlevel_services[i], service)) < 0)
2c4104f0 3238 goto finish;
23a177ef 3239
fc5df99e
LP		 3240 } else if (de->d_name[0] == 'K' &&
3241 (rcnd_table[i].type == RUNLEVEL_DOWN ||
3242 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
6542952f 3243
c68364b7
LP		 3244 if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
3245 goto finish;
3246
3247 if ((r = set_put(shutdown_services, service)) < 0)
2c4104f0
LP		 3248 goto finish;
3249 }
3250 }
3251 }
3252
c68364b7
LP		 3253 /* Now we loaded all stubs and are aware of the lowest
3254 start-up priority for all services, not let's actually load
3255 the services, this will also tell us which services are
3256 actually native now */
3257 manager_dispatch_load_queue(m);
3258
3259 /* If this is a native service, rely on native ways to pull in
3260 * a service, don't pull it in via sysv rcN.d links. */
3261 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3262 SET_FOREACH(service, runlevel_services[i], j) {
3263 service = unit_follow_merge(service);
3264
ac155bb8 3265 if (service->fragment_path)
c68364b7
LP		 3266 continue;
3267
3268 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
3269 goto finish;
3270 }
3271
3272 /* We honour K links only for halt/reboot. For the normal
3273 * runlevels we assume the stop jobs will be implicitly added
35b8ca3a 3274 * by the core logic. Also, we don't really distinguish here
c68364b7
LP		 3275 * between the runlevels 0 and 6 and just add them to the
3276 * special shutdown target. On SUSE the boot.d/ runlevel is
3277 * also used for shutdown, so we add links for that too to the
3278 * shutdown target.*/
3279 SET_FOREACH(service, shutdown_services, j) {
3280 service = unit_follow_merge(service);
3281
ac155bb8 3282 if (service->fragment_path)
c68364b7
LP		 3283 continue;
3284
ead8e478 3285 if ((r = unit_add_two_dependencies_by_name(service, UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
c68364b7
LP		 3286 goto finish;
3287 }
3288
2c4104f0
LP		 3289 r = 0;
3290
de3910a3 3291#ifdef TARGET_SUSE
3a111838 3292 sysv_facility_in_insserv_conf (m);
de3910a3
FC		 3293#endif
3294
2c4104f0
LP		 3295finish:
3296 free(path);
3297 free(fpath);
3298 free(name);
fbe9f3a9 3299
c68364b7
LP		 3300 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3301 set_free(runlevel_services[i]);
3302 set_free(shutdown_services);
3303
fbe9f3a9
LP		 3304 if (d)
3305 closedir(d);
2c4104f0
LP		 3306
3307 return r;
3308}
07459bb6 3309#endif
2c4104f0 3310
05e343b7
LP		 3311static void service_bus_name_owner_change(
3312 Unit *u,
3313 const char *name,
3314 const char *old_owner,
3315 const char *new_owner) {
3316
3317 Service *s = SERVICE(u);
3318
3319 assert(s);
3320 assert(name);
3321
3322 assert(streq(s->bus_name, name));
3323 assert(old_owner || new_owner);
3324
3325 if (old_owner && new_owner)
ac155bb8 3326 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->id, name, old_owner, new_owner);
05e343b7 3327 else if (old_owner)
ac155bb8 3328 log_debug("%s's D-Bus name %s no longer registered by %s", u->id, name, old_owner);
05e343b7 3329 else
ac155bb8 3330 log_debug("%s's D-Bus name %s now registered by %s", u->id, name, new_owner);
05e343b7
LP		 3331
3332 s->bus_name_good = !!new_owner;
3333
3334 if (s->type == SERVICE_DBUS) {
3335
3336 /* service_enter_running() will figure out what to
3337 * do */
3338 if (s->state == SERVICE_RUNNING)
3339 service_enter_running(s, true);
3340 else if (s->state == SERVICE_START && new_owner)
3341 service_enter_start_post(s);
3342
3343 } else if (new_owner &&
3344 s->main_pid <= 0 &&
3345 (s->state == SERVICE_START ||
3346 s->state == SERVICE_START_POST ||
3347 s->state == SERVICE_RUNNING ||
3348 s->state == SERVICE_RELOAD)) {
3349
3350 /* Try to acquire PID from bus service */
3351 log_debug("Trying to acquire PID from D-Bus name...");
3352
ac155bb8 3353 bus_query_pid(u->manager, name);
05e343b7
LP		 3354 }
3355}
3356
3357static void service_bus_query_pid_done(
3358 Unit *u,
3359 const char *name,
3360 pid_t pid) {
3361
3362 Service *s = SERVICE(u);
3363
3364 assert(s);
3365 assert(name);
3366
ac155bb8 3367 log_debug("%s's D-Bus name %s is now owned by process %u", u->id, name, (unsigned) pid);
05e343b7
LP		 3368
3369 if (s->main_pid <= 0 &&
3370 (s->state == SERVICE_START ||
3371 s->state == SERVICE_START_POST ||
3372 s->state == SERVICE_RUNNING ||
3373 s->state == SERVICE_RELOAD))
5925dd3c 3374 service_set_main_pid(s, pid);
05e343b7
LP		 3375}
3376
6cf6bbc2 3377int service_set_socket_fd(Service *s, int fd, Socket *sock) {
57020a3a 3378
4f2d528d
LP		 3379 assert(s);
3380 assert(fd >= 0);
3381
3382 /* This is called by the socket code when instantiating a new
3383 * service for a stream socket and the socket needs to be
3384 * configured. */
3385
1124fe6f 3386 if (UNIT(s)->load_state != UNIT_LOADED)
4f2d528d
LP		 3387 return -EINVAL;
3388
3389 if (s->socket_fd >= 0)
3390 return -EBUSY;
3391
3392 if (s->state != SERVICE_DEAD)
3393 return -EAGAIN;
3394
3395 s->socket_fd = fd;
701cc384 3396 s->got_socket_fd = true;
6cf6bbc2 3397
57020a3a
LP		 3398 unit_ref_set(&s->accept_socket, UNIT(sock));
3399
3400 return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
4f2d528d
LP		 3401}
3402
fdf20a31 3403static void service_reset_failed(Unit *u) {
5632e374
LP		 3404 Service *s = SERVICE(u);
3405
3406 assert(s);
3407
fdf20a31 3408 if (s->state == SERVICE_FAILED)
5632e374
LP		 3409 service_set_state(s, SERVICE_DEAD);
3410
3411 s->failure = false;
3412}
3413
5f4b19f4
LP		 3414static bool service_need_daemon_reload(Unit *u) {
3415 Service *s = SERVICE(u);
3416
3417 assert(s);
3418
3419#ifdef HAVE_SYSV_COMPAT
3420 if (s->sysv_path) {
3421 struct stat st;
3422
3423 zero(st);
3424 if (stat(s->sysv_path, &st) < 0)
3425 /* What, cannot access this anymore? */
3426 return true;
3427
3428 if (s->sysv_mtime > 0 &&
3429 timespec_load(&st.st_mtim) != s->sysv_mtime)
3430 return true;
3431 }
3432#endif
3433
3434 return false;
3435}
3436
8a0867d6
LP		 3437static int service_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
3438 Service *s = SERVICE(u);
3439 int r = 0;
3440 Set *pid_set = NULL;
3441
3442 assert(s);
3443
3444 if (s->main_pid <= 0 && who == KILL_MAIN) {
3445 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
a17204af 3446 return -ESRCH;
8a0867d6
LP		 3447 }
3448
3449 if (s->control_pid <= 0 && who == KILL_CONTROL) {
3450 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
a17204af 3451 return -ESRCH;
8a0867d6
LP		 3452 }
3453
3611581e
LP		 3454 if (who == KILL_CONTROL || who == KILL_ALL)
3455 if (s->control_pid > 0)
3456 if (kill(s->control_pid, signo) < 0)
3457 r = -errno;
8a0867d6 3458
3611581e
LP		 3459 if (who == KILL_MAIN || who == KILL_ALL)
3460 if (s->main_pid > 0)
3461 if (kill(s->main_pid, signo) < 0)
3462 r = -errno;
8a0867d6 3463
3611581e 3464 if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) {
8a0867d6
LP		 3465 int q;
3466
3467 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
3468 return -ENOMEM;
3469
3470 /* Exclude the control/main pid from being killed via the cgroup */
3471 if (s->control_pid > 0)
3472 if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
3473 r = q;
3474 goto finish;
3475 }
3476
3477 if (s->main_pid > 0)
3478 if ((q = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0) {
3479 r = q;
3480 goto finish;
3481 }
3482
1124fe6f 3483 if ((q = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, signo, false, pid_set)) < 0)
3611581e 3484 if (q != -EAGAIN && q != -ESRCH && q != -ENOENT)
8a0867d6
LP		 3485 r = q;
3486 }
3487
3488finish:
3489 if (pid_set)
3490 set_free(pid_set);
3491
3492 return r;
3493}
3494
94f04347
LP		 3495static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3496 [SERVICE_DEAD] = "dead",
3497 [SERVICE_START_PRE] = "start-pre",
3498 [SERVICE_START] = "start",
3499 [SERVICE_START_POST] = "start-post",
3500 [SERVICE_RUNNING] = "running",
80876c20 3501 [SERVICE_EXITED] = "exited",
94f04347
LP		 3502 [SERVICE_RELOAD] = "reload",
3503 [SERVICE_STOP] = "stop",
3504 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3505 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3506 [SERVICE_STOP_POST] = "stop-post",
3507 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3508 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
fdf20a31 3509 [SERVICE_FAILED] = "failed",
94f04347
LP		 3510 [SERVICE_AUTO_RESTART] = "auto-restart",
3511};
3512
3513DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3514
3515static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
525ee6f4
LP		 3516 [SERVICE_RESTART_NO] = "no",
3517 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
50caaedb
LP		 3518 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3519 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3520 [SERVICE_RESTART_ALWAYS] = "always"
94f04347
LP		 3521};
3522
3523DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3524
3525static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
94f04347 3526 [SERVICE_SIMPLE] = "simple",
0d624a78 3527 [SERVICE_FORKING] = "forking",
34e9ba66 3528 [SERVICE_ONESHOT] = "oneshot",
8c47c732
LP		 3529 [SERVICE_DBUS] = "dbus",
3530 [SERVICE_NOTIFY] = "notify"
94f04347
LP		 3531};
3532
3533DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3534
e537352b 3535static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
94f04347
LP		 3536 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3537 [SERVICE_EXEC_START] = "ExecStart",
3538 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3539 [SERVICE_EXEC_RELOAD] = "ExecReload",
3540 [SERVICE_EXEC_STOP] = "ExecStop",
3541 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3542};
3543
3544DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3545
c952c6ec
LP		 3546static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3547 [NOTIFY_NONE] = "none",
3548 [NOTIFY_MAIN] = "main",
3549 [NOTIFY_ALL] = "all"
3550};
3551
3552DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3553
87f0e418 3554const UnitVTable service_vtable = {
5cb5a6ff 3555 .suffix = ".service",
7d17cfbc 3556 .object_size = sizeof(Service),
f975e971
LP		 3557 .sections =
3558 "Unit\0"
3559 "Service\0"
3560 "Install\0",
9e58ff9c 3561 .show_status = true,
5cb5a6ff 3562
034c6ed7
LP		 3563 .init = service_init,
3564 .done = service_done,
a16e1123
LP		 3565 .load = service_load,
3566
3567 .coldplug = service_coldplug,
034c6ed7 3568
5cb5a6ff
LP		 3569 .dump = service_dump,
3570
3571 .start = service_start,
3572 .stop = service_stop,
3573 .reload = service_reload,
3574
034c6ed7
LP		 3575 .can_reload = service_can_reload,
3576
8a0867d6
LP		 3577 .kill = service_kill,
3578
a16e1123
LP		 3579 .serialize = service_serialize,
3580 .deserialize_item = service_deserialize_item,
3581
5cb5a6ff 3582 .active_state = service_active_state,
10a94420 3583 .sub_state_to_string = service_sub_state_to_string,
5cb5a6ff 3584
701cc384
LP		 3585 .check_gc = service_check_gc,
3586 .check_snapshot = service_check_snapshot,
3587
034c6ed7
LP		 3588 .sigchld_event = service_sigchld_event,
3589 .timer_event = service_timer_event,
3a111838 3590 .fd_event = service_fd_event,
2c4104f0 3591
fdf20a31 3592 .reset_failed = service_reset_failed,
5632e374 3593
5f4b19f4
LP		 3594 .need_daemon_reload = service_need_daemon_reload,
3595
8e274523 3596 .cgroup_notify_empty = service_cgroup_notify_event,
8c47c732 3597 .notify_message = service_notify_message,
8e274523 3598
05e343b7
LP		 3599 .bus_name_owner_change = service_bus_name_owner_change,
3600 .bus_query_pid_done = service_bus_query_pid_done,
3601
c4e2ceae 3602 .bus_interface = "org.freedesktop.systemd1.Service",
4139c1b2 3603 .bus_message_handler = bus_service_message_handler,
c4e2ceae 3604 .bus_invalidating_properties = bus_service_invalidating_properties,
4139c1b2 3605
07459bb6 3606#ifdef HAVE_SYSV_COMPAT
2c4104f0 3607 .enumerate = service_enumerate
07459bb6 3608#endif
5cb5a6ff 3609};
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