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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
83c60c9f
LP		 22#include <sys/types.h>
23#include <sys/stat.h>
24#include <unistd.h>
25#include <errno.h>
26#include <fcntl.h>
f94ea366 27#include <sys/epoll.h>
034c6ed7 28#include <signal.h>
4f2d528d 29#include <arpa/inet.h>
83c60c9f 30
87f0e418 31#include "unit.h"
5cb5a6ff 32#include "socket.h"
cebf8b20 33#include "netinet/tcp.h"
83c60c9f 34#include "log.h"
23a177ef
LP		 35#include "load-dropin.h"
36#include "load-fragment.h"
9e2f7c11 37#include "strv.h"
4f2d528d 38#include "unit-name.h"
4139c1b2 39#include "dbus-socket.h"
4fd5948e 40#include "missing.h"
a40eb732 41#include "special.h"
398ef8ba 42#include "bus-errors.h"
e51bc1a2 43#include "label.h"
83c60c9f 44
acbb0225 45static const UnitActiveState state_translation_table[_SOCKET_STATE_MAX] = {
87f0e418
LP		 46 [SOCKET_DEAD] = UNIT_INACTIVE,
47 [SOCKET_START_PRE] = UNIT_ACTIVATING,
48 [SOCKET_START_POST] = UNIT_ACTIVATING,
49 [SOCKET_LISTENING] = UNIT_ACTIVE,
50 [SOCKET_RUNNING] = UNIT_ACTIVE,
51 [SOCKET_STOP_PRE] = UNIT_DEACTIVATING,
52 [SOCKET_STOP_PRE_SIGTERM] = UNIT_DEACTIVATING,
53 [SOCKET_STOP_PRE_SIGKILL] = UNIT_DEACTIVATING,
54 [SOCKET_STOP_POST] = UNIT_DEACTIVATING,
80876c20
LP		 55 [SOCKET_FINAL_SIGTERM] = UNIT_DEACTIVATING,
56 [SOCKET_FINAL_SIGKILL] = UNIT_DEACTIVATING,
fdf20a31 57 [SOCKET_FAILED] = UNIT_FAILED
83c60c9f 58};
5cb5a6ff 59
a16e1123
LP		 60static void socket_init(Unit *u) {
61 Socket *s = SOCKET(u);
62
63 assert(u);
64 assert(u->meta.load_state == UNIT_STUB);
65
a16e1123
LP		 66 s->backlog = SOMAXCONN;
67 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
68 s->directory_mode = 0755;
69 s->socket_mode = 0666;
70
6cf6bbc2
LP		 71 s->max_connections = 64;
72
4fd5948e 73 s->priority = -1;
4fd5948e
LP		 74 s->ip_tos = -1;
75 s->ip_ttl = -1;
4fd5948e 76 s->mark = -1;
4fd5948e 77
a16e1123
LP		 78 exec_context_init(&s->exec_context);
79
80 s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID;
81}
acbb0225 82
5e94833f
LP		 83static void socket_unwatch_control_pid(Socket *s) {
84 assert(s);
85
86 if (s->control_pid <= 0)
87 return;
88
89 unit_unwatch_pid(UNIT(s), s->control_pid);
90 s->control_pid = 0;
91}
92
87f0e418
LP		 93static void socket_done(Unit *u) {
94 Socket *s = SOCKET(u);
034c6ed7 95 SocketPort *p;
6cf6bbc2 96 Meta *i;
034c6ed7
LP		 97
98 assert(s);
99
100 while ((p = s->ports)) {
101 LIST_REMOVE(SocketPort, port, s->ports, p);
102
a16e1123
LP		 103 if (p->fd >= 0) {
104 unit_unwatch_fd(UNIT(s), &p->fd_watch);
105 close_nointr_nofail(p->fd);
106 }
107
034c6ed7
LP		 108 free(p->path);
109 free(p);
110 }
111
112 exec_context_done(&s->exec_context);
e537352b 113 exec_command_free_array(s->exec_command, _SOCKET_EXEC_COMMAND_MAX);
034c6ed7
LP		 114 s->control_command = NULL;
115
5e94833f 116 socket_unwatch_control_pid(s);
034c6ed7
LP		 117
118 s->service = NULL;
119
cebf8b20
TT		 120 free(s->tcp_congestion);
121 s->tcp_congestion = NULL;
122
acbb0225 123 free(s->bind_to_device);
e537352b 124 s->bind_to_device = NULL;
acbb0225
LP		 125
126 unit_unwatch_timer(u, &s->timer_watch);
6cf6bbc2
LP		 127
128 /* Make sure no service instance refers to us anymore. */
129 LIST_FOREACH(units_per_type, i, u->meta.manager->units_per_type[UNIT_SERVICE]) {
130 Service *service = (Service *) i;
131
f976f3f6
LP		 132 if (service->accept_socket == s)
133 service->accept_socket = NULL;
134
135 set_remove(service->configured_sockets, s);
6cf6bbc2 136 }
5cb5a6ff
LP		 137}
138
b15bdda8
LP		 139static int socket_instantiate_service(Socket *s) {
140 char *prefix, *name;
141 int r;
142 Unit *u;
143
144 assert(s);
145
146 /* This fills in s->service if it isn't filled in yet. For
147 * Accept=yes sockets we create the next connection service
148 * here. For Accept=no this is mostly a NOP since the service
149 * is figured out at load time anyway. */
150
151 if (s->service)
152 return 0;
153
154 assert(s->accept);
155
156 if (!(prefix = unit_name_to_prefix(s->meta.id)))
157 return -ENOMEM;
158
159 r = asprintf(&name, "%s@%u.service", prefix, s->n_accepted);
160 free(prefix);
161
162 if (r < 0)
163 return -ENOMEM;
164
165 r = manager_load_unit(s->meta.manager, name, NULL, NULL, &u);
166 free(name);
167
168 if (r < 0)
169 return r;
170
6c073082 171 u->meta.no_gc = true;
b15bdda8
LP		 172 s->service = SERVICE(u);
173 return 0;
174}
175
4f2d528d
LP		 176static bool have_non_accept_socket(Socket *s) {
177 SocketPort *p;
178
179 assert(s);
180
181 if (!s->accept)
182 return true;
183
dd5ad9d4
LP		 184 LIST_FOREACH(port, p, s->ports) {
185
186 if (p->type != SOCKET_SOCKET)
187 return true;
188
4f2d528d
LP		 189 if (!socket_address_can_accept(&p->address))
190 return true;
dd5ad9d4 191 }
4f2d528d
LP		 192
193 return false;
194}
195
196static int socket_verify(Socket *s) {
197 assert(s);
198
4cd1fbcc 199 if (s->meta.load_state != UNIT_LOADED)
4f2d528d
LP		 200 return 0;
201
202 if (!s->ports) {
4cd1fbcc 203 log_error("%s lacks Listen setting. Refusing.", s->meta.id);
4f2d528d
LP		 204 return -EINVAL;
205 }
206
0009d2a6
LP		 207 if (s->accept && have_non_accept_socket(s)) {
208 log_error("%s configured for accepting sockets, but sockets are non-accepting. Refusing.", s->meta.id);
209 return -EINVAL;
210 }
211
6cf6bbc2 212 if (s->accept && s->max_connections <= 0) {
4d0e5dbd
LP		 213 log_error("%s's MaxConnection setting too small. Refusing.", s->meta.id);
214 return -EINVAL;
215 }
216
d9ff321a
LP		 217 if (s->accept && s->service) {
218 log_error("Explicit service configuration for accepting sockets not supported on %s. Refusing.", s->meta.id);
219 return -EINVAL;
220 }
221
2e22afe9 222 if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
4d0e5dbd 223 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id);
6cf6bbc2
LP		 224 return -EINVAL;
225 }
226
4f2d528d
LP		 227 return 0;
228}
229
6e2ef85b
LP		 230static bool socket_needs_mount(Socket *s, const char *prefix) {
231 SocketPort *p;
232
233 assert(s);
234
235 LIST_FOREACH(port, p, s->ports) {
236
237 if (p->type == SOCKET_SOCKET) {
238 if (socket_address_needs_mount(&p->address, prefix))
239 return true;
240 } else {
241 assert(p->type == SOCKET_FIFO);
242 if (path_startswith(p->path, prefix))
243 return true;
244 }
245 }
246
247 return false;
248}
249
250int socket_add_one_mount_link(Socket *s, Mount *m) {
251 int r;
252
253 assert(s);
254 assert(m);
255
256 if (s->meta.load_state != UNIT_LOADED ||
257 m->meta.load_state != UNIT_LOADED)
258 return 0;
259
260 if (!socket_needs_mount(s, m->where))
261 return 0;
262
2c966c03 263 if ((r = unit_add_two_dependencies(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, UNIT(m), true)) < 0)
6e2ef85b
LP		 264 return r;
265
266 return 0;
267}
268
269static int socket_add_mount_links(Socket *s) {
270 Meta *other;
271 int r;
272
273 assert(s);
274
275 LIST_FOREACH(units_per_type, other, s->meta.manager->units_per_type[UNIT_MOUNT])
276 if ((r = socket_add_one_mount_link(s, (Mount*) other)) < 0)
277 return r;
278
279 return 0;
280}
281
282static int socket_add_device_link(Socket *s) {
283 char *t;
284 int r;
285
286 assert(s);
287
288 if (!s->bind_to_device)
289 return 0;
290
291 if (asprintf(&t, "/sys/subsystem/net/devices/%s", s->bind_to_device) < 0)
292 return -ENOMEM;
293
294 r = unit_add_node_link(UNIT(s), t, false);
295 free(t);
296
297 return r;
298}
299
a40eb732
LP		 300static int socket_add_default_dependencies(Socket *s) {
301 int r;
302 assert(s);
303
2a77d31d
LP		 304 if (s->meta.manager->running_as == MANAGER_SYSTEM) {
305 if ((r = unit_add_dependency_by_name(UNIT(s), UNIT_BEFORE, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
306 return r;
307
a40eb732
LP		 308 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true)) < 0)
309 return r;
2a77d31d 310 }
a40eb732 311
ead8e478 312 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
a40eb732
LP		 313}
314
e537352b
LP		 315static int socket_load(Unit *u) {
316 Socket *s = SOCKET(u);
317 int r;
44d8db9e 318
e537352b
LP		 319 assert(u);
320 assert(u->meta.load_state == UNIT_STUB);
44d8db9e 321
e537352b 322 if ((r = unit_load_fragment_and_dropin(u)) < 0)
23a177ef 323 return r;
44d8db9e 324
23a177ef 325 /* This is a new unit? Then let's add in some extras */
e537352b 326 if (u->meta.load_state == UNIT_LOADED) {
44d8db9e 327
4f2d528d 328 if (have_non_accept_socket(s)) {
d9ff321a
LP		 329
330 if (!s->service)
331 if ((r = unit_load_related_unit(u, ".service", (Unit**) &s->service)) < 0)
332 return r;
23a177ef 333
701cc384 334 if ((r = unit_add_dependency(u, UNIT_BEFORE, UNIT(s->service), true)) < 0)
4f2d528d
LP		 335 return r;
336 }
44d8db9e 337
6e2ef85b
LP		 338 if ((r = socket_add_mount_links(s)) < 0)
339 return r;
340
341 if ((r = socket_add_device_link(s)) < 0)
342 return r;
343
23a177ef
LP		 344 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
345 return r;
346
d686d8a9 347 if ((r = unit_add_default_cgroups(u)) < 0)
23a177ef 348 return r;
a40eb732
LP		 349
350 if (s->meta.default_dependencies)
351 if ((r = socket_add_default_dependencies(s)) < 0)
352 return r;
23a177ef
LP		 353 }
354
4f2d528d 355 return socket_verify(s);
44d8db9e
LP		 356}
357
542563ba
LP		 358static const char* listen_lookup(int type) {
359
360 if (type == SOCK_STREAM)
361 return "ListenStream";
362 else if (type == SOCK_DGRAM)
363 return "ListenDatagram";
364 else if (type == SOCK_SEQPACKET)
365 return "ListenSequentialPacket";
366
034c6ed7 367 assert_not_reached("Unknown socket type");
542563ba
LP		 368 return NULL;
369}
370
87f0e418 371static void socket_dump(Unit *u, FILE *f, const char *prefix) {
5cb5a6ff 372
5cb5a6ff 373 SocketExecCommand c;
87f0e418 374 Socket *s = SOCKET(u);
542563ba 375 SocketPort *p;
82ba9f08
LP		 376 const char *prefix2;
377 char *p2;
5cb5a6ff
LP		 378
379 assert(s);
fa068367 380 assert(f);
5cb5a6ff 381
82ba9f08
LP		 382 p2 = strappend(prefix, "\t");
383 prefix2 = p2 ? p2 : prefix;
c43d20a0 384
5cb5a6ff
LP		 385 fprintf(f,
386 "%sSocket State: %s\n"
542563ba 387 "%sBindIPv6Only: %s\n"
b5a0699f
LP		 388 "%sBacklog: %u\n"
389 "%sSocketMode: %04o\n"
4fd5948e
LP		 390 "%sDirectoryMode: %04o\n"
391 "%sKeepAlive: %s\n"
cebf8b20
TT		 392 "%sFreeBind: %s\n"
393 "%sTCPCongestion: %s\n",
a16e1123 394 prefix, socket_state_to_string(s->state),
c0120d99 395 prefix, socket_address_bind_ipv6_only_to_string(s->bind_ipv6_only),
b5a0699f
LP		 396 prefix, s->backlog,
397 prefix, s->socket_mode,
4fd5948e
LP		 398 prefix, s->directory_mode,
399 prefix, yes_no(s->keep_alive),
cebf8b20 400 prefix, yes_no(s->free_bind),
83a95334 401 prefix, strna(s->tcp_congestion));
542563ba 402
70123e68
LP		 403 if (s->control_pid > 0)
404 fprintf(f,
bb00e604
LP		 405 "%sControl PID: %lu\n",
406 prefix, (unsigned long) s->control_pid);
70123e68 407
acbb0225
LP		 408 if (s->bind_to_device)
409 fprintf(f,
410 "%sBindToDevice: %s\n",
411 prefix, s->bind_to_device);
412
4f2d528d
LP		 413 if (s->accept)
414 fprintf(f,
6cf6bbc2
LP		 415 "%sAccepted: %u\n"
416 "%sNConnections: %u\n"
417 "%sMaxConnections: %u\n",
418 prefix, s->n_accepted,
419 prefix, s->n_connections,
420 prefix, s->max_connections);
4f2d528d 421
4fd5948e
LP		 422 if (s->priority >= 0)
423 fprintf(f,
424 "%sPriority: %i\n",
425 prefix, s->priority);
426
427 if (s->receive_buffer > 0)
428 fprintf(f,
429 "%sReceiveBuffer: %zu\n",
430 prefix, s->receive_buffer);
431
432 if (s->send_buffer > 0)
433 fprintf(f,
434 "%sSendBuffer: %zu\n",
435 prefix, s->send_buffer);
436
437 if (s->ip_tos >= 0)
438 fprintf(f,
439 "%sIPTOS: %i\n",
440 prefix, s->ip_tos);
441
442 if (s->ip_ttl >= 0)
443 fprintf(f,
444 "%sIPTTL: %i\n",
445 prefix, s->ip_ttl);
446
447 if (s->pipe_size > 0)
448 fprintf(f,
449 "%sPipeSize: %zu\n",
450 prefix, s->pipe_size);
451
452 if (s->mark >= 0)
453 fprintf(f,
454 "%sMark: %i\n",
455 prefix, s->mark);
456
034c6ed7 457 LIST_FOREACH(port, p, s->ports) {
5cb5a6ff 458
542563ba
LP		 459 if (p->type == SOCKET_SOCKET) {
460 const char *t;
461 int r;
e364ad06 462 char *k = NULL;
542563ba
LP		 463
464 if ((r = socket_address_print(&p->address, &k)) < 0)
465 t = strerror(-r);
466 else
467 t = k;
468
e364ad06 469 fprintf(f, "%s%s: %s\n", prefix, listen_lookup(p->address.type), t);
542563ba
LP		 470 free(k);
471 } else
472 fprintf(f, "%sListenFIFO: %s\n", prefix, p->path);
473 }
5cb5a6ff
LP		 474
475 exec_context_dump(&s->exec_context, f, prefix);
476
e537352b 477 for (c = 0; c < _SOCKET_EXEC_COMMAND_MAX; c++) {
c43d20a0
LP		 478 if (!s->exec_command[c])
479 continue;
5cb5a6ff 480
40d50879 481 fprintf(f, "%s-> %s:\n",
a16e1123 482 prefix, socket_exec_command_to_string(c));
c43d20a0
LP		 483
484 exec_command_dump_list(s->exec_command[c], f, prefix2);
5cb5a6ff 485 }
c43d20a0 486
82ba9f08 487 free(p2);
5cb5a6ff
LP		 488}
489
4f2d528d
LP		 490static int instance_from_socket(int fd, unsigned nr, char **instance) {
491 socklen_t l;
492 char *r;
493 union {
494 struct sockaddr sa;
495 struct sockaddr_un un;
496 struct sockaddr_in in;
497 struct sockaddr_in6 in6;
498 struct sockaddr_storage storage;
499 } local, remote;
500
501 assert(fd >= 0);
502 assert(instance);
503
504 l = sizeof(local);
505 if (getsockname(fd, &local.sa, &l) < 0)
506 return -errno;
507
508 l = sizeof(remote);
509 if (getpeername(fd, &remote.sa, &l) < 0)
510 return -errno;
511
512 switch (local.sa.sa_family) {
513
514 case AF_INET: {
515 uint32_t
516 a = ntohl(local.in.sin_addr.s_addr),
517 b = ntohl(remote.in.sin_addr.s_addr);
518
519 if (asprintf(&r,
b15bdda8 520 "%u.%u.%u.%u:%u-%u.%u.%u.%u:%u",
4f2d528d
LP		 521 a >> 24, (a >> 16) & 0xFF, (a >> 8) & 0xFF, a & 0xFF,
522 ntohs(local.in.sin_port),
523 b >> 24, (b >> 16) & 0xFF, (b >> 8) & 0xFF, b & 0xFF,
524 ntohs(remote.in.sin_port)) < 0)
525 return -ENOMEM;
526
527 break;
528 }
529
530 case AF_INET6: {
2b061f5a
LP		 531 static const char ipv4_prefix[] = {
532 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF
533 };
534
535 if (memcmp(&local.in6.sin6_addr, ipv4_prefix, sizeof(ipv4_prefix)) == 0 &&
536 memcmp(&remote.in6.sin6_addr, ipv4_prefix, sizeof(ipv4_prefix)) == 0) {
537 const uint8_t
538 *a = local.in6.sin6_addr.s6_addr+12,
539 *b = remote.in6.sin6_addr.s6_addr+12;
540
541 if (asprintf(&r,
b15bdda8 542 "%u.%u.%u.%u:%u-%u.%u.%u.%u:%u",
2b061f5a
LP		 543 a[0], a[1], a[2], a[3],
544 ntohs(local.in6.sin6_port),
545 b[0], b[1], b[2], b[3],
546 ntohs(remote.in6.sin6_port)) < 0)
547 return -ENOMEM;
548 } else {
549 char a[INET6_ADDRSTRLEN], b[INET6_ADDRSTRLEN];
550
551 if (asprintf(&r,
b15bdda8 552 "%s:%u-%s:%u",
2b061f5a
LP		 553 inet_ntop(AF_INET6, &local.in6.sin6_addr, a, sizeof(a)),
554 ntohs(local.in6.sin6_port),
555 inet_ntop(AF_INET6, &remote.in6.sin6_addr, b, sizeof(b)),
556 ntohs(remote.in6.sin6_port)) < 0)
557 return -ENOMEM;
558 }
4f2d528d
LP		 559
560 break;
561 }
562
563 case AF_UNIX: {
564 struct ucred ucred;
565
566 l = sizeof(ucred);
567 if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0)
568 return -errno;
569
570 if (asprintf(&r,
bb00e604 571 "%u-%lu-%lu",
4f2d528d 572 nr,
bb00e604
LP		 573 (unsigned long) ucred.pid,
574 (unsigned long) ucred.uid) < 0)
4f2d528d
LP		 575 return -ENOMEM;
576
577 break;
578 }
579
580 default:
581 assert_not_reached("Unhandled socket type.");
582 }
583
584 *instance = r;
585 return 0;
586}
587
034c6ed7 588static void socket_close_fds(Socket *s) {
83c60c9f
LP		 589 SocketPort *p;
590
591 assert(s);
592
034c6ed7 593 LIST_FOREACH(port, p, s->ports) {
83c60c9f
LP		 594 if (p->fd < 0)
595 continue;
596
acbb0225 597 unit_unwatch_fd(UNIT(s), &p->fd_watch);
a16e1123
LP		 598 close_nointr_nofail(p->fd);
599
600 /* One little note: we should never delete any sockets
601 * in the file system here! After all some other
602 * process we spawned might still have a reference of
603 * this fd and wants to continue to use it. Therefore
604 * we delete sockets in the file system before we
605 * create a new one, not after we stopped using
606 * one! */
9152c765 607
83c60c9f
LP		 608 p->fd = -1;
609 }
610}
611
4fd5948e
LP		 612static void socket_apply_socket_options(Socket *s, int fd) {
613 assert(s);
614 assert(fd >= 0);
615
616 if (s->keep_alive) {
617 int b = s->keep_alive;
618 if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &b, sizeof(b)) < 0)
619 log_warning("SO_KEEPALIVE failed: %m");
620 }
621
622 if (s->priority >= 0)
623 if (setsockopt(fd, SOL_SOCKET, SO_PRIORITY, &s->priority, sizeof(s->priority)) < 0)
624 log_warning("SO_PRIORITY failed: %m");
625
626 if (s->receive_buffer > 0) {
627 int value = (int) s->receive_buffer;
628 if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &value, sizeof(value)) < 0)
629 log_warning("SO_RCVBUF failed: %m");
630 }
631
632 if (s->send_buffer > 0) {
633 int value = (int) s->send_buffer;
634 if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &value, sizeof(value)) < 0)
635 log_warning("SO_SNDBUF failed: %m");
636 }
637
638 if (s->mark >= 0)
639 if (setsockopt(fd, SOL_SOCKET, SO_MARK, &s->mark, sizeof(s->mark)) < 0)
640 log_warning("SO_MARK failed: %m");
641
642 if (s->ip_tos >= 0)
643 if (setsockopt(fd, IPPROTO_IP, IP_TOS, &s->ip_tos, sizeof(s->ip_tos)) < 0)
644 log_warning("IP_TOS failed: %m");
645
46925ac5
LP		 646 if (s->ip_ttl >= 0) {
647 int r, x;
648
649 r = setsockopt(fd, IPPROTO_IP, IP_TTL, &s->ip_ttl, sizeof(s->ip_ttl));
5bfcc1c6
FF		 650
651 if (socket_ipv6_is_supported())
652 x = setsockopt(fd, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &s->ip_ttl, sizeof(s->ip_ttl));
653 else {
654 x = -1;
655 errno = EAFNOSUPPORT;
656 }
46925ac5
LP		 657
658 if (r < 0 && x < 0)
659 log_warning("IP_TTL/IPV6_UNICAST_HOPS failed: %m");
660 }
cebf8b20
TT		 661
662 if (s->tcp_congestion)
663 if (setsockopt(fd, SOL_TCP, TCP_CONGESTION, s->tcp_congestion, strlen(s->tcp_congestion)+1) < 0)
664 log_warning("TCP_CONGESTION failed: %m");
4fd5948e
LP		 665}
666
b15bdda8 667static void socket_apply_fifo_options(Socket *s, int fd) {
4fd5948e
LP		 668 assert(s);
669 assert(fd >= 0);
670
671 if (s->pipe_size > 0)
672 if (fcntl(fd, F_SETPIPE_SZ, s->pipe_size) < 0)
673 log_warning("F_SETPIPE_SZ: %m");
674}
675
7a58bfa4 676
b15bdda8
LP		 677static int fifo_address_create(
678 const char *path,
679 mode_t directory_mode,
680 mode_t socket_mode,
b15bdda8
LP		 681 int *_fd) {
682
7a58bfa4 683 int fd = -1, r = 0;
b15bdda8
LP		 684 struct stat st;
685 mode_t old_mask;
686
687 assert(path);
688 assert(_fd);
689
690 mkdir_parents(path, directory_mode);
691
c4e2ceae 692 if ((r = label_fifofile_set(path)) < 0)
56cf987f 693 goto fail;
b15bdda8
LP		 694
695 /* Enforce the right access mode for the fifo */
696 old_mask = umask(~ socket_mode);
697
698 /* Include the original umask in our mask */
699 umask(~socket_mode | old_mask);
700
701 r = mkfifo(path, socket_mode);
702 umask(old_mask);
703
704 if (r < 0) {
705 r = -errno;
706 goto fail;
707 }
708
709 if ((fd = open(path, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW)) < 0) {
710 r = -errno;
711 goto fail;
712 }
713
56cf987f 714 label_file_clear();
7a58bfa4 715
b15bdda8
LP		 716 if (fstat(fd, &st) < 0) {
717 r = -errno;
718 goto fail;
719 }
720
721 if (!S_ISFIFO(st.st_mode) ||
de0200fc 722 (st.st_mode & 0777) != (socket_mode & ~old_mask) ||
b15bdda8
LP		 723 st.st_uid != getuid() ||
724 st.st_gid != getgid()) {
725
726 r = -EEXIST;
727 goto fail;
728 }
729
730 *_fd = fd;
731 return 0;
732
733fail:
56cf987f
DW		 734 label_file_clear();
735
b15bdda8
LP		 736 if (fd >= 0)
737 close_nointr_nofail(fd);
738
739 return r;
740}
741
034c6ed7 742static int socket_open_fds(Socket *s) {
83c60c9f
LP		 743 SocketPort *p;
744 int r;
56cf987f 745 char *label = NULL;
049f8642 746 bool know_label = false;
83c60c9f
LP		 747
748 assert(s);
749
034c6ed7 750 LIST_FOREACH(port, p, s->ports) {
83c60c9f 751
034c6ed7
LP		 752 if (p->fd >= 0)
753 continue;
83c60c9f
LP		 754
755 if (p->type == SOCKET_SOCKET) {
756
049f8642
LP		 757 if (!know_label) {
758
759 if ((r = socket_instantiate_service(s)) < 0)
760 return r;
761
762 if ((r = label_get_socket_label_from_exe(s->service->exec_command[SERVICE_EXEC_START]->path, &label)) < 0)
763 return r;
764
765 know_label = true;
766 }
767
b5a0699f
LP		 768 if ((r = socket_address_listen(
769 &p->address,
770 s->backlog,
771 s->bind_ipv6_only,
772 s->bind_to_device,
4fd5948e 773 s->free_bind,
b5a0699f
LP		 774 s->directory_mode,
775 s->socket_mode,
56cf987f 776 label,
b5a0699f 777 &p->fd)) < 0)
83c60c9f
LP		 778 goto rollback;
779
4fd5948e
LP		 780 socket_apply_socket_options(s, p->fd);
781
b15bdda8 782 } else if (p->type == SOCKET_FIFO) {
83c60c9f 783
b15bdda8
LP		 784 if ((r = fifo_address_create(
785 p->path,
786 s->directory_mode,
787 s->socket_mode,
b15bdda8 788 &p->fd)) < 0)
83c60c9f 789 goto rollback;
83c60c9f 790
b15bdda8 791 socket_apply_fifo_options(s, p->fd);
83c60c9f 792
b15bdda8
LP		 793 } else
794 assert_not_reached("Unknown port type");
034c6ed7
LP		 795 }
796
56cf987f 797 label_free(label);
034c6ed7
LP		 798 return 0;
799
800rollback:
801 socket_close_fds(s);
56cf987f 802 label_free(label);
034c6ed7
LP		 803 return r;
804}
805
806static void socket_unwatch_fds(Socket *s) {
807 SocketPort *p;
9152c765 808
034c6ed7
LP		 809 assert(s);
810
811 LIST_FOREACH(port, p, s->ports) {
812 if (p->fd < 0)
813 continue;
814
acbb0225 815 unit_unwatch_fd(UNIT(s), &p->fd_watch);
83c60c9f 816 }
034c6ed7
LP		 817}
818
819static int socket_watch_fds(Socket *s) {
820 SocketPort *p;
821 int r;
822
823 assert(s);
83c60c9f 824
034c6ed7
LP		 825 LIST_FOREACH(port, p, s->ports) {
826 if (p->fd < 0)
827 continue;
828
cabab516 829 p->fd_watch.socket_accept =
4f2d528d 830 s->accept &&
dd5ad9d4 831 p->type == SOCKET_SOCKET &&
4f2d528d
LP		 832 socket_address_can_accept(&p->address);
833
f94ea366 834 if ((r = unit_watch_fd(UNIT(s), p->fd, EPOLLIN, &p->fd_watch)) < 0)
034c6ed7
LP		 835 goto fail;
836 }
83c60c9f 837
542563ba 838 return 0;
83c60c9f 839
034c6ed7
LP		 840fail:
841 socket_unwatch_fds(s);
842 return r;
843}
844
845static void socket_set_state(Socket *s, SocketState state) {
846 SocketState old_state;
847 assert(s);
848
849 old_state = s->state;
850 s->state = state;
851
852 if (state != SOCKET_START_PRE &&
853 state != SOCKET_START_POST &&
854 state != SOCKET_STOP_PRE &&
855 state != SOCKET_STOP_PRE_SIGTERM &&
856 state != SOCKET_STOP_PRE_SIGKILL &&
857 state != SOCKET_STOP_POST &&
80876c20
LP		 858 state != SOCKET_FINAL_SIGTERM &&
859 state != SOCKET_FINAL_SIGKILL) {
acbb0225 860 unit_unwatch_timer(UNIT(s), &s->timer_watch);
5e94833f 861 socket_unwatch_control_pid(s);
034c6ed7 862 s->control_command = NULL;
a16e1123 863 s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID;
e537352b 864 }
034c6ed7 865
a16e1123
LP		 866 if (state != SOCKET_LISTENING)
867 socket_unwatch_fds(s);
868
034c6ed7
LP		 869 if (state != SOCKET_START_POST &&
870 state != SOCKET_LISTENING &&
871 state != SOCKET_RUNNING &&
872 state != SOCKET_STOP_PRE &&
873 state != SOCKET_STOP_PRE_SIGTERM &&
874 state != SOCKET_STOP_PRE_SIGKILL)
875 socket_close_fds(s);
876
e537352b 877 if (state != old_state)
40d50879 878 log_debug("%s changed %s -> %s",
a16e1123
LP		 879 s->meta.id,
880 socket_state_to_string(old_state),
881 socket_state_to_string(state));
acbb0225 882
e2f3b44c 883 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], true);
034c6ed7
LP		 884}
885
a16e1123
LP		 886static int socket_coldplug(Unit *u) {
887 Socket *s = SOCKET(u);
888 int r;
889
890 assert(s);
891 assert(s->state == SOCKET_DEAD);
892
893 if (s->deserialized_state != s->state) {
894
895 if (s->deserialized_state == SOCKET_START_PRE ||
896 s->deserialized_state == SOCKET_START_POST ||
897 s->deserialized_state == SOCKET_STOP_PRE ||
898 s->deserialized_state == SOCKET_STOP_PRE_SIGTERM ||
899 s->deserialized_state == SOCKET_STOP_PRE_SIGKILL ||
900 s->deserialized_state == SOCKET_STOP_POST ||
901 s->deserialized_state == SOCKET_FINAL_SIGTERM ||
902 s->deserialized_state == SOCKET_FINAL_SIGKILL) {
903
904 if (s->control_pid <= 0)
905 return -EBADMSG;
906
907 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
908 return r;
909
910 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
911 return r;
912 }
913
914 if (s->deserialized_state == SOCKET_START_POST ||
915 s->deserialized_state == SOCKET_LISTENING ||
916 s->deserialized_state == SOCKET_RUNNING ||
917 s->deserialized_state == SOCKET_STOP_PRE ||
918 s->deserialized_state == SOCKET_STOP_PRE_SIGTERM ||
919 s->deserialized_state == SOCKET_STOP_PRE_SIGKILL)
920 if ((r = socket_open_fds(s)) < 0)
921 return r;
922
923 if (s->deserialized_state == SOCKET_LISTENING)
924 if ((r = socket_watch_fds(s)) < 0)
925 return r;
926
927 socket_set_state(s, s->deserialized_state);
928 }
929
930 return 0;
931}
932
e537352b 933static int socket_spawn(Socket *s, ExecCommand *c, pid_t *_pid) {
034c6ed7
LP		 934 pid_t pid;
935 int r;
9e2f7c11 936 char **argv;
034c6ed7
LP		 937
938 assert(s);
939 assert(c);
940 assert(_pid);
941
e537352b
LP		 942 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
943 goto fail;
034c6ed7 944
9e2f7c11
LP		 945 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
946 r = -ENOMEM;
947 goto fail;
948 }
949
950 r = exec_spawn(c,
951 argv,
952 &s->exec_context,
953 NULL, 0,
1137a57c 954 s->meta.manager->environment,
9e2f7c11
LP		 955 true,
956 true,
1e3ad081 957 true,
4cd1fbcc
LP		 958 s->meta.manager->confirm_spawn,
959 s->meta.cgroup_bondings,
9e2f7c11
LP		 960 &pid);
961
962 strv_free(argv);
963 if (r < 0)
034c6ed7
LP		 964 goto fail;
965
87f0e418 966 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
034c6ed7
LP		 967 /* FIXME: we need to do something here */
968 goto fail;
83c60c9f 969
034c6ed7
LP		 970 *_pid = pid;
971
972 return 0;
973
974fail:
e537352b 975 unit_unwatch_timer(UNIT(s), &s->timer_watch);
83c60c9f
LP		 976
977 return r;
542563ba
LP		 978}
979
034c6ed7
LP		 980static void socket_enter_dead(Socket *s, bool success) {
981 assert(s);
982
983 if (!success)
984 s->failure = true;
985
fdf20a31 986 socket_set_state(s, s->failure ? SOCKET_FAILED : SOCKET_DEAD);
034c6ed7
LP		 987}
988
80876c20
LP		 989static void socket_enter_signal(Socket *s, SocketState state, bool success);
990
034c6ed7
LP		 991static void socket_enter_stop_post(Socket *s, bool success) {
992 int r;
993 assert(s);
994
995 if (!success)
996 s->failure = true;
997
5e94833f
LP		 998 socket_unwatch_control_pid(s);
999
a16e1123
LP		 1000 s->control_command_id = SOCKET_EXEC_STOP_POST;
1001
80876c20 1002 if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_POST])) {
e537352b 1003 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
034c6ed7
LP		 1004 goto fail;
1005
80876c20
LP		 1006 socket_set_state(s, SOCKET_STOP_POST);
1007 } else
1008 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, true);
034c6ed7
LP		 1009
1010 return;
1011
1012fail:
6cf6bbc2 1013 log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
80876c20 1014 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
034c6ed7
LP		 1015}
1016
1017static void socket_enter_signal(Socket *s, SocketState state, bool success) {
1018 int r;
ca949c9d
LP		 1019 Set *pid_set = NULL;
1020 bool wait_for_exit = false;
034c6ed7
LP		 1021
1022 assert(s);
1023
1024 if (!success)
1025 s->failure = true;
1026
2e22afe9
LP		 1027 if (s->exec_context.kill_mode != KILL_NONE) {
1028 int sig = (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
034c6ed7 1029
ca949c9d
LP		 1030 if (s->control_pid > 0) {
1031 if (kill(s->exec_context.kill_mode == KILL_PROCESS_GROUP ?
1032 -s->control_pid :
1033 s->control_pid, sig) < 0 && errno != ESRCH)
50159e6a 1034
ca949c9d
LP		 1035 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1036 else
1037 wait_for_exit = true;
034c6ed7 1038 }
50159e6a 1039
ca949c9d
LP		 1040 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1041
1042 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1043 r = -ENOMEM;
50159e6a
LP		 1044 goto fail;
1045 }
ca949c9d
LP		 1046
1047 /* Exclude the control pid from being killed via the cgroup */
1048 if (s->control_pid > 0)
1049 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1050 goto fail;
1051
1052 if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig, pid_set)) < 0) {
1053 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
1054 log_warning("Failed to kill control group: %s", strerror(-r));
1055 } else if (r > 0)
1056 wait_for_exit = true;
1057
1058 set_free(pid_set);
1059 }
d6ea93e3 1060 }
034c6ed7 1061
ca949c9d 1062 if (wait_for_exit) {
80876c20
LP		 1063 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1064 goto fail;
d6ea93e3 1065
80876c20
LP		 1066 socket_set_state(s, state);
1067 } else if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL)
1068 socket_enter_stop_post(s, true);
1069 else
034c6ed7
LP		 1070 socket_enter_dead(s, true);
1071
1072 return;
1073
1074fail:
9e2f7c11 1075 log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1076
1077 if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL)
1078 socket_enter_stop_post(s, false);
1079 else
1080 socket_enter_dead(s, false);
ca949c9d
LP		 1081
1082 if (pid_set)
1083 set_free(pid_set);
034c6ed7
LP		 1084}
1085
1086static void socket_enter_stop_pre(Socket *s, bool success) {
1087 int r;
1088 assert(s);
1089
1090 if (!success)
1091 s->failure = true;
1092
5e94833f
LP		 1093 socket_unwatch_control_pid(s);
1094
a16e1123
LP		 1095 s->control_command_id = SOCKET_EXEC_STOP_PRE;
1096
80876c20 1097 if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_PRE])) {
e537352b 1098 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
034c6ed7
LP		 1099 goto fail;
1100
80876c20
LP		 1101 socket_set_state(s, SOCKET_STOP_PRE);
1102 } else
034c6ed7
LP		 1103 socket_enter_stop_post(s, true);
1104
1105 return;
1106
1107fail:
6cf6bbc2 1108 log_warning("%s failed to run 'stop-pre' task: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1109 socket_enter_stop_post(s, false);
1110}
1111
e9af15c3
LP		 1112static void socket_enter_listening(Socket *s) {
1113 int r;
1114 assert(s);
1115
1116 if ((r = socket_watch_fds(s)) < 0) {
9e2f7c11 1117 log_warning("%s failed to watch sockets: %s", s->meta.id, strerror(-r));
e9af15c3
LP		 1118 goto fail;
1119 }
1120
1121 socket_set_state(s, SOCKET_LISTENING);
1122 return;
1123
1124fail:
1125 socket_enter_stop_pre(s, false);
1126}
1127
034c6ed7
LP		 1128static void socket_enter_start_post(Socket *s) {
1129 int r;
1130 assert(s);
1131
e9af15c3 1132 if ((r = socket_open_fds(s)) < 0) {
9e2f7c11 1133 log_warning("%s failed to listen on sockets: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1134 goto fail;
1135 }
1136
5e94833f
LP		 1137 socket_unwatch_control_pid(s);
1138
a16e1123
LP		 1139 s->control_command_id = SOCKET_EXEC_START_POST;
1140
80876c20 1141 if ((s->control_command = s->exec_command[SOCKET_EXEC_START_POST])) {
e537352b 1142 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) {
6cf6bbc2 1143 log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1144 goto fail;
1145 }
1146
80876c20
LP		 1147 socket_set_state(s, SOCKET_START_POST);
1148 } else
e9af15c3 1149 socket_enter_listening(s);
034c6ed7
LP		 1150
1151 return;
1152
1153fail:
1154 socket_enter_stop_pre(s, false);
1155}
1156
1157static void socket_enter_start_pre(Socket *s) {
1158 int r;
1159 assert(s);
1160
5e94833f
LP		 1161 socket_unwatch_control_pid(s);
1162
a16e1123
LP		 1163 s->control_command_id = SOCKET_EXEC_START_PRE;
1164
80876c20 1165 if ((s->control_command = s->exec_command[SOCKET_EXEC_START_PRE])) {
e537352b 1166 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
034c6ed7
LP		 1167 goto fail;
1168
80876c20
LP		 1169 socket_set_state(s, SOCKET_START_PRE);
1170 } else
034c6ed7
LP		 1171 socket_enter_start_post(s);
1172
1173 return;
1174
1175fail:
6cf6bbc2 1176 log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1177 socket_enter_dead(s, false);
1178}
1179
4f2d528d 1180static void socket_enter_running(Socket *s, int cfd) {
034c6ed7 1181 int r;
398ef8ba 1182 DBusError error;
034c6ed7
LP		 1183
1184 assert(s);
398ef8ba 1185 dbus_error_init(&error);
034c6ed7 1186
ba3e67a7
LP		 1187 /* We don't take connections anymore if we are supposed to
1188 * shut down anyway */
18ffdfda 1189 if (unit_pending_inactive(UNIT(s))) {
7c610628
LP		 1190 if (cfd >= 0)
1191 close_nointr_nofail(cfd);
1192 else {
1193 /* Flush all sockets by closing and reopening them */
1194 socket_close_fds(s);
1195
1196 if ((r = socket_watch_fds(s)) < 0) {
1197 log_warning("%s failed to watch sockets: %s", s->meta.id, strerror(-r));
1198 socket_enter_stop_pre(s, false);
1199 }
1200 }
1201
ba3e67a7
LP		 1202 return;
1203 }
1204
4f2d528d 1205 if (cfd < 0) {
f976f3f6
LP		 1206 bool pending = false;
1207 Meta *i;
1208
1209 /* If there's already a start pending don't bother to
1210 * do anything */
1211 LIST_FOREACH(units_per_type, i, s->meta.manager->units_per_type[UNIT_SERVICE]) {
1212 Service *service = (Service *) i;
1213
1214 if (!set_get(service->configured_sockets, s))
1215 continue;
1216
1217 if (!unit_pending_active(UNIT(service)))
1218 continue;
1219
1220 pending = true;
1221 break;
1222 }
1223
1224 if (!pending)
1225 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s->service), JOB_REPLACE, true, &error, NULL)) < 0)
1226 goto fail;
4f2d528d
LP		 1227
1228 socket_set_state(s, SOCKET_RUNNING);
1229 } else {
b4f10a5e 1230 char *prefix, *instance = NULL, *name;
b15bdda8 1231 Service *service;
4f2d528d 1232
6cf6bbc2
LP		 1233 if (s->n_connections >= s->max_connections) {
1234 log_warning("Too many incoming connections (%u)", s->n_connections);
1235 close_nointr_nofail(cfd);
1236 return;
1237 }
1238
b15bdda8
LP		 1239 if ((r = socket_instantiate_service(s)) < 0)
1240 goto fail;
1241
1242 if ((r = instance_from_socket(cfd, s->n_accepted, &instance)) < 0)
4f2d528d
LP		 1243 goto fail;
1244
4cd1fbcc 1245 if (!(prefix = unit_name_to_prefix(s->meta.id))) {
4f2d528d
LP		 1246 free(instance);
1247 r = -ENOMEM;
1248 goto fail;
1249 }
1250
1251 name = unit_name_build(prefix, instance, ".service");
1252 free(prefix);
1253 free(instance);
1254
b6dbbe1c 1255 if (!name) {
4f2d528d 1256 r = -ENOMEM;
b6dbbe1c
LP		 1257 goto fail;
1258 }
4f2d528d 1259
b15bdda8
LP		 1260 if ((r = unit_add_name(UNIT(s->service), name)) < 0) {
1261 free(name);
4f2d528d 1262 goto fail;
b15bdda8
LP		 1263 }
1264
1265 service = s->service;
1266 s->service = NULL;
1267 s->n_accepted ++;
4f2d528d 1268
6c073082
LP		 1269 service->meta.no_gc = false;
1270
b15bdda8
LP		 1271 unit_choose_id(UNIT(service), name);
1272 free(name);
1273
1274 if ((r = service_set_socket_fd(service, cfd, s)) < 0)
4f2d528d
LP		 1275 goto fail;
1276
1277 cfd = -1;
6cf6bbc2
LP		 1278 s->n_connections ++;
1279
b15bdda8 1280 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(service), JOB_REPLACE, true, &error, NULL)) < 0)
4f2d528d 1281 goto fail;
c4e2ceae
LP		 1282
1283 /* Notify clients about changed counters */
1284 unit_add_to_dbus_queue(UNIT(s));
4f2d528d 1285 }
034c6ed7 1286
034c6ed7
LP		 1287 return;
1288
1289fail:
398ef8ba 1290 log_warning("%s failed to queue socket startup job: %s", s->meta.id, bus_error(&error, r));
80876c20 1291 socket_enter_stop_pre(s, false);
4f2d528d
LP		 1292
1293 if (cfd >= 0)
1294 close_nointr_nofail(cfd);
398ef8ba
LP		 1295
1296 dbus_error_free(&error);
034c6ed7
LP		 1297}
1298
1299static void socket_run_next(Socket *s, bool success) {
1300 int r;
1301
1302 assert(s);
1303 assert(s->control_command);
1304 assert(s->control_command->command_next);
1305
1306 if (!success)
1307 s->failure = true;
1308
5e94833f
LP		 1309 socket_unwatch_control_pid(s);
1310
034c6ed7
LP		 1311 s->control_command = s->control_command->command_next;
1312
e537352b 1313 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
034c6ed7
LP		 1314 goto fail;
1315
1316 return;
1317
1318fail:
6cf6bbc2 1319 log_warning("%s failed to run next task: %s", s->meta.id, strerror(-r));
80876c20
LP		 1320
1321 if (s->state == SOCKET_START_POST)
1322 socket_enter_stop_pre(s, false);
034c6ed7
LP		 1323 else if (s->state == SOCKET_STOP_POST)
1324 socket_enter_dead(s, false);
1325 else
80876c20 1326 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
034c6ed7
LP		 1327}
1328
87f0e418
LP		 1329static int socket_start(Unit *u) {
1330 Socket *s = SOCKET(u);
83c60c9f
LP		 1331
1332 assert(s);
1333
034c6ed7
LP		 1334 /* We cannot fulfill this request right now, try again later
1335 * please! */
1336 if (s->state == SOCKET_STOP_PRE ||
1337 s->state == SOCKET_STOP_PRE_SIGKILL ||
1338 s->state == SOCKET_STOP_PRE_SIGTERM ||
1339 s->state == SOCKET_STOP_POST ||
80876c20
LP		 1340 s->state == SOCKET_FINAL_SIGTERM ||
1341 s->state == SOCKET_FINAL_SIGKILL)
034c6ed7
LP		 1342 return -EAGAIN;
1343
83c60c9f
LP		 1344 if (s->state == SOCKET_START_PRE ||
1345 s->state == SOCKET_START_POST)
034c6ed7 1346 return 0;
83c60c9f 1347
034c6ed7 1348 /* Cannot run this without the service being around */
4f2d528d
LP		 1349 if (s->service) {
1350 if (s->service->meta.load_state != UNIT_LOADED)
1351 return -ENOENT;
1352
1353 /* If the service is alredy actvie we cannot start the
1354 * socket */
1355 if (s->service->state != SERVICE_DEAD &&
fdf20a31 1356 s->service->state != SERVICE_FAILED &&
4f2d528d
LP		 1357 s->service->state != SERVICE_AUTO_RESTART)
1358 return -EBUSY;
1359 }
e537352b 1360
fdf20a31 1361 assert(s->state == SOCKET_DEAD || s->state == SOCKET_FAILED);
83c60c9f 1362
034c6ed7
LP		 1363 s->failure = false;
1364 socket_enter_start_pre(s);
1365 return 0;
1366}
83c60c9f 1367
87f0e418
LP		 1368static int socket_stop(Unit *u) {
1369 Socket *s = SOCKET(u);
034c6ed7
LP		 1370
1371 assert(s);
1372
e537352b
LP		 1373 /* Already on it */
1374 if (s->state == SOCKET_STOP_PRE ||
1375 s->state == SOCKET_STOP_PRE_SIGTERM ||
1376 s->state == SOCKET_STOP_PRE_SIGKILL ||
1377 s->state == SOCKET_STOP_POST ||
80876c20 1378 s->state == SOCKET_FINAL_SIGTERM ||
3f6c78dc 1379 s->state == SOCKET_FINAL_SIGKILL)
e537352b
LP		 1380 return 0;
1381
3f6c78dc
LP		 1382 /* If there's already something running we go directly into
1383 * kill mode. */
1384 if (s->state == SOCKET_START_PRE ||
1385 s->state == SOCKET_START_POST) {
1386 socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, true);
1387 return -EAGAIN;
1388 }
1389
034c6ed7 1390 assert(s->state == SOCKET_LISTENING || s->state == SOCKET_RUNNING);
83c60c9f 1391
034c6ed7 1392 socket_enter_stop_pre(s, true);
542563ba
LP		 1393 return 0;
1394}
1395
a16e1123
LP		 1396static int socket_serialize(Unit *u, FILE *f, FDSet *fds) {
1397 Socket *s = SOCKET(u);
1398 SocketPort *p;
1399 int r;
1400
1401 assert(u);
1402 assert(f);
1403 assert(fds);
1404
1405 unit_serialize_item(u, f, "state", socket_state_to_string(s->state));
1406 unit_serialize_item(u, f, "failure", yes_no(s->failure));
1407 unit_serialize_item_format(u, f, "n-accepted", "%u", s->n_accepted);
1408
1409 if (s->control_pid > 0)
5925dd3c 1410 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
a16e1123
LP		 1411
1412 if (s->control_command_id >= 0)
1413 unit_serialize_item(u, f, "control-command", socket_exec_command_to_string(s->control_command_id));
1414
1415 LIST_FOREACH(port, p, s->ports) {
1416 int copy;
1417
1418 if (p->fd < 0)
1419 continue;
1420
1421 if ((copy = fdset_put_dup(fds, p->fd)) < 0)
1422 return copy;
1423
1424 if (p->type == SOCKET_SOCKET) {
1425 char *t;
1426
1427 if ((r = socket_address_print(&p->address, &t)) < 0)
1428 return r;
1429
27ca8d7a 1430 unit_serialize_item_format(u, f, "socket", "%i %i %s", copy, p->address.type, t);
a16e1123
LP		 1431 free(t);
1432 } else {
1433 assert(p->type == SOCKET_FIFO);
1434 unit_serialize_item_format(u, f, "fifo", "%i %s", copy, p->path);
1435 }
1436 }
1437
1438 return 0;
1439}
1440
1441static int socket_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
1442 Socket *s = SOCKET(u);
a16e1123
LP		 1443
1444 assert(u);
1445 assert(key);
1446 assert(value);
1447 assert(fds);
1448
1449 if (streq(key, "state")) {
1450 SocketState state;
1451
1452 if ((state = socket_state_from_string(value)) < 0)
1453 log_debug("Failed to parse state value %s", value);
1454 else
1455 s->deserialized_state = state;
1456 } else if (streq(key, "failure")) {
1457 int b;
1458
1459 if ((b = parse_boolean(value)) < 0)
1460 log_debug("Failed to parse failure value %s", value);
1461 else
1462 s->failure = b || s->failure;
1463
1464 } else if (streq(key, "n-accepted")) {
1465 unsigned k;
1466
e364ad06 1467 if (safe_atou(value, &k) < 0)
a16e1123
LP		 1468 log_debug("Failed to parse n-accepted value %s", value);
1469 else
1470 s->n_accepted += k;
1471 } else if (streq(key, "control-pid")) {
5925dd3c 1472 pid_t pid;
a16e1123 1473
e364ad06 1474 if (parse_pid(value, &pid) < 0)
a16e1123
LP		 1475 log_debug("Failed to parse control-pid value %s", value);
1476 else
5925dd3c 1477 s->control_pid = pid;
a16e1123
LP		 1478 } else if (streq(key, "control-command")) {
1479 SocketExecCommand id;
1480
1481 if ((id = socket_exec_command_from_string(value)) < 0)
1482 log_debug("Failed to parse exec-command value %s", value);
1483 else {
1484 s->control_command_id = id;
1485 s->control_command = s->exec_command[id];
1486 }
1487 } else if (streq(key, "fifo")) {
1488 int fd, skip = 0;
1489 SocketPort *p;
1490
1491 if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd))
1492 log_debug("Failed to parse fifo value %s", value);
1493 else {
1494
1495 LIST_FOREACH(port, p, s->ports)
1496 if (streq(p->path, value+skip))
1497 break;
1498
1499 if (p) {
1500 if (p->fd >= 0)
1501 close_nointr_nofail(p->fd);
1502 p->fd = fdset_remove(fds, fd);
1503 }
1504 }
1505
1506 } else if (streq(key, "socket")) {
27ca8d7a 1507 int fd, type, skip = 0;
a16e1123
LP		 1508 SocketPort *p;
1509
27ca8d7a 1510 if (sscanf(value, "%i %i %n", &fd, &type, &skip) < 2 || fd < 0 || type < 0 || !fdset_contains(fds, fd))
a16e1123
LP		 1511 log_debug("Failed to parse socket value %s", value);
1512 else {
1513
1514 LIST_FOREACH(port, p, s->ports)
27ca8d7a 1515 if (socket_address_is(&p->address, value+skip, type))
a16e1123
LP		 1516 break;
1517
1518 if (p) {
1519 if (p->fd >= 0)
1520 close_nointr_nofail(p->fd);
1521 p->fd = fdset_remove(fds, fd);
1522 }
1523 }
1524
1525 } else
1526 log_debug("Unknown serialization key '%s'", key);
1527
1528 return 0;
1529}
1530
87f0e418
LP		 1531static UnitActiveState socket_active_state(Unit *u) {
1532 assert(u);
5cb5a6ff 1533
acbb0225 1534 return state_translation_table[SOCKET(u)->state];
5cb5a6ff
LP		 1535}
1536
10a94420
LP		 1537static const char *socket_sub_state_to_string(Unit *u) {
1538 assert(u);
1539
a16e1123 1540 return socket_state_to_string(SOCKET(u)->state);
10a94420
LP		 1541}
1542
6cf6bbc2
LP		 1543static bool socket_check_gc(Unit *u) {
1544 Socket *s = SOCKET(u);
1545
1546 assert(u);
1547
1548 return s->n_connections > 0;
1549}
1550
acbb0225 1551static void socket_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
87f0e418 1552 Socket *s = SOCKET(u);
4f2d528d 1553 int cfd = -1;
9152c765 1554
034c6ed7 1555 assert(s);
8d567588 1556 assert(fd >= 0);
9152c765 1557
871d7de4
LP		 1558 if (s->state != SOCKET_LISTENING)
1559 return;
1560
9e2f7c11 1561 log_debug("Incoming traffic on %s", u->meta.id);
9152c765 1562
4f2d528d
LP		 1563 if (events != EPOLLIN) {
1564 log_error("Got invalid poll event on socket.");
8d567588 1565 goto fail;
4f2d528d
LP		 1566 }
1567
cabab516 1568 if (w->socket_accept) {
4f2d528d
LP		 1569 for (;;) {
1570
1571 if ((cfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK)) < 0) {
1572
1573 if (errno == EINTR)
1574 continue;
1575
1576 log_error("Failed to accept socket: %m");
8d567588 1577 goto fail;
4f2d528d
LP		 1578 }
1579
1580 break;
1581 }
4fd5948e
LP		 1582
1583 socket_apply_socket_options(s, cfd);
4f2d528d 1584 }
9152c765 1585
4f2d528d 1586 socket_enter_running(s, cfd);
8d567588
LP		 1587 return;
1588
1589fail:
1590 socket_enter_stop_pre(s, false);
9152c765
LP		 1591}
1592
87f0e418
LP		 1593static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1594 Socket *s = SOCKET(u);
034c6ed7 1595 bool success;
5cb5a6ff
LP		 1596
1597 assert(s);
034c6ed7 1598 assert(pid >= 0);
5cb5a6ff 1599
8c47c732
LP		 1600 if (pid != s->control_pid)
1601 return;
542563ba 1602
034c6ed7
LP		 1603 s->control_pid = 0;
1604
8c47c732 1605 success = is_clean_exit(code, status);
8c47c732 1606
b708e7ce 1607 if (s->control_command) {
169c1bda 1608 exec_status_exit(&s->control_command->exec_status, pid, code, status, s->exec_context.utmp_id);
a16e1123 1609
b708e7ce
LP		 1610 if (s->control_command->ignore)
1611 success = true;
1612 }
1613
92abbefb
LP		 1614 log_full(success ? LOG_DEBUG : LOG_NOTICE,
1615 "%s control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
b708e7ce 1616 s->failure = s->failure || !success;
034c6ed7 1617
a16e1123
LP		 1618 if (s->control_command && s->control_command->command_next && success) {
1619 log_debug("%s running next command for state %s", u->meta.id, socket_state_to_string(s->state));
034c6ed7 1620 socket_run_next(s, success);
acbb0225 1621 } else {
a16e1123
LP		 1622 s->control_command = NULL;
1623 s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID;
1624
034c6ed7
LP		 1625 /* No further commands for this step, so let's figure
1626 * out what to do next */
5cb5a6ff 1627
a16e1123 1628 log_debug("%s got final SIGCHLD for state %s", u->meta.id, socket_state_to_string(s->state));
acbb0225 1629
034c6ed7
LP		 1630 switch (s->state) {
1631
1632 case SOCKET_START_PRE:
1633 if (success)
acbb0225 1634 socket_enter_start_post(s);
034c6ed7 1635 else
80876c20 1636 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
034c6ed7
LP		 1637 break;
1638
1639 case SOCKET_START_POST:
1640 if (success)
e9af15c3 1641 socket_enter_listening(s);
034c6ed7
LP		 1642 else
1643 socket_enter_stop_pre(s, false);
1644 break;
1645
1646 case SOCKET_STOP_PRE:
1647 case SOCKET_STOP_PRE_SIGTERM:
1648 case SOCKET_STOP_PRE_SIGKILL:
1649 socket_enter_stop_post(s, success);
1650 break;
1651
1652 case SOCKET_STOP_POST:
80876c20
LP		 1653 case SOCKET_FINAL_SIGTERM:
1654 case SOCKET_FINAL_SIGKILL:
034c6ed7
LP		 1655 socket_enter_dead(s, success);
1656 break;
1657
1658 default:
1659 assert_not_reached("Uh, control process died at wrong time.");
1660 }
1661 }
c4e2ceae
LP		 1662
1663 /* Notify clients about changed exit status */
1664 unit_add_to_dbus_queue(u);
034c6ed7 1665}
5cb5a6ff 1666
acbb0225 1667static void socket_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
87f0e418 1668 Socket *s = SOCKET(u);
5cb5a6ff 1669
034c6ed7
LP		 1670 assert(s);
1671 assert(elapsed == 1);
acbb0225 1672 assert(w == &s->timer_watch);
034c6ed7
LP		 1673
1674 switch (s->state) {
1675
1676 case SOCKET_START_PRE:
9e2f7c11 1677 log_warning("%s starting timed out. Terminating.", u->meta.id);
80876c20
LP		 1678 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
1679
034c6ed7 1680 case SOCKET_START_POST:
9e2f7c11 1681 log_warning("%s starting timed out. Stopping.", u->meta.id);
034c6ed7
LP		 1682 socket_enter_stop_pre(s, false);
1683 break;
1684
1685 case SOCKET_STOP_PRE:
9e2f7c11 1686 log_warning("%s stopping timed out. Terminating.", u->meta.id);
034c6ed7
LP		 1687 socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, false);
1688 break;
1689
1690 case SOCKET_STOP_PRE_SIGTERM:
ba035df2
LP		 1691 if (s->exec_context.send_sigkill) {
1692 log_warning("%s stopping timed out. Killing.", u->meta.id);
1693 socket_enter_signal(s, SOCKET_STOP_PRE_SIGKILL, false);
1694 } else {
1695 log_warning("%s stopping timed out. Skipping SIGKILL. Ignoring.", u->meta.id);
1696 socket_enter_stop_post(s, false);
1697 }
034c6ed7
LP		 1698 break;
1699
1700 case SOCKET_STOP_PRE_SIGKILL:
9e2f7c11 1701 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
034c6ed7
LP		 1702 socket_enter_stop_post(s, false);
1703 break;
1704
1705 case SOCKET_STOP_POST:
9e2f7c11 1706 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
80876c20 1707 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
034c6ed7
LP		 1708 break;
1709
80876c20 1710 case SOCKET_FINAL_SIGTERM:
ba035df2
LP		 1711 if (s->exec_context.send_sigkill) {
1712 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
1713 socket_enter_signal(s, SOCKET_FINAL_SIGKILL, false);
1714 } else {
1715 log_warning("%s stopping timed out (2). Skipping SIGKILL. Ignoring.", u->meta.id);
1716 socket_enter_dead(s, false);
1717 }
034c6ed7
LP		 1718 break;
1719
80876c20 1720 case SOCKET_FINAL_SIGKILL:
fdf20a31 1721 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->meta.id);
034c6ed7
LP		 1722 socket_enter_dead(s, false);
1723 break;
1724
1725 default:
1726 assert_not_reached("Timeout at wrong time.");
1727 }
5cb5a6ff
LP		 1728}
1729
44d8db9e
LP		 1730int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds) {
1731 int *rfds;
1732 unsigned rn_fds, k;
1733 SocketPort *p;
1734
1735 assert(s);
1736 assert(fds);
1737 assert(n_fds);
1738
1739 /* Called from the service code for requesting our fds */
1740
1741 rn_fds = 0;
1742 LIST_FOREACH(port, p, s->ports)
1743 if (p->fd >= 0)
1744 rn_fds++;
1745
e364ad06 1746 if (!(rfds = new(int, rn_fds)))
44d8db9e
LP		 1747 return -ENOMEM;
1748
1749 k = 0;
1750 LIST_FOREACH(port, p, s->ports)
1751 if (p->fd >= 0)
1752 rfds[k++] = p->fd;
1753
1754 assert(k == rn_fds);
1755
1756 *fds = rfds;
1757 *n_fds = rn_fds;
1758
1759 return 0;
1760}
1761
ceee3d82
LP		 1762void socket_notify_service_dead(Socket *s) {
1763 assert(s);
1764
6cf6bbc2
LP		 1765 /* The service is dead. Dang!
1766 *
1767 * This is strictly for one-instance-for-all-connections
1768 * services. */
ceee3d82
LP		 1769
1770 if (s->state == SOCKET_RUNNING) {
9e2f7c11 1771 log_debug("%s got notified about service death.", s->meta.id);
ceee3d82
LP		 1772 socket_enter_listening(s);
1773 }
1774}
1775
6cf6bbc2
LP		 1776void socket_connection_unref(Socket *s) {
1777 assert(s);
1778
1779 /* The service is dead. Yay!
1780 *
1781 * This is strictly for one-onstance-per-connection
1782 * services. */
1783
1784 assert(s->n_connections > 0);
1785 s->n_connections--;
1786
1787 log_debug("%s: One connection closed, %u left.", s->meta.id, s->n_connections);
1788}
1789
fdf20a31 1790static void socket_reset_failed(Unit *u) {
5632e374
LP		 1791 Socket *s = SOCKET(u);
1792
1793 assert(s);
1794
fdf20a31 1795 if (s->state == SOCKET_FAILED)
5632e374
LP		 1796 socket_set_state(s, SOCKET_DEAD);
1797
1798 s->failure = false;
1799}
1800
8a0867d6
LP		 1801static int socket_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
1802 Socket *s = SOCKET(u);
1803 int r = 0;
1804 Set *pid_set = NULL;
1805
1806 assert(s);
1807
1808 if (who == KILL_MAIN) {
1809 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "Socket units have no main processes");
1810 return -EINVAL;
1811 }
1812
1813 if (s->control_pid <= 0 && who == KILL_CONTROL) {
1814 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
1815 return -ENOENT;
1816 }
1817
1818 if (s->control_pid > 0)
1819 if (kill(mode == KILL_PROCESS_GROUP ? -s->control_pid : s->control_pid, signo) < 0)
1820 r = -errno;
1821
1822 if (mode == KILL_CONTROL_GROUP) {
1823 int q;
1824
1825 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
1826 return -ENOMEM;
1827
1828 /* Exclude the control pid from being killed via the cgroup */
1829 if (s->control_pid > 0)
1830 if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
1831 r = q;
1832 goto finish;
1833 }
1834
1835 if ((q = cgroup_bonding_kill_list(s->meta.cgroup_bondings, signo, pid_set)) < 0)
1836 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
1837 r = q;
1838 }
1839
1840finish:
1841 if (pid_set)
1842 set_free(pid_set);
1843
1844 return r;
1845}
1846
a16e1123
LP		 1847static const char* const socket_state_table[_SOCKET_STATE_MAX] = {
1848 [SOCKET_DEAD] = "dead",
1849 [SOCKET_START_PRE] = "start-pre",
1850 [SOCKET_START_POST] = "start-post",
1851 [SOCKET_LISTENING] = "listening",
1852 [SOCKET_RUNNING] = "running",
1853 [SOCKET_STOP_PRE] = "stop-pre",
1854 [SOCKET_STOP_PRE_SIGTERM] = "stop-pre-sigterm",
1855 [SOCKET_STOP_PRE_SIGKILL] = "stop-pre-sigkill",
1856 [SOCKET_STOP_POST] = "stop-post",
1857 [SOCKET_FINAL_SIGTERM] = "final-sigterm",
1858 [SOCKET_FINAL_SIGKILL] = "final-sigkill",
fdf20a31 1859 [SOCKET_FAILED] = "failed"
a16e1123
LP		 1860};
1861
1862DEFINE_STRING_TABLE_LOOKUP(socket_state, SocketState);
1863
1864static const char* const socket_exec_command_table[_SOCKET_EXEC_COMMAND_MAX] = {
1865 [SOCKET_EXEC_START_PRE] = "StartPre",
1866 [SOCKET_EXEC_START_POST] = "StartPost",
1867 [SOCKET_EXEC_STOP_PRE] = "StopPre",
1868 [SOCKET_EXEC_STOP_POST] = "StopPost"
1869};
1870
1871DEFINE_STRING_TABLE_LOOKUP(socket_exec_command, SocketExecCommand);
1872
87f0e418 1873const UnitVTable socket_vtable = {
5cb5a6ff
LP		 1874 .suffix = ".socket",
1875
034c6ed7
LP		 1876 .init = socket_init,
1877 .done = socket_done,
a16e1123
LP		 1878 .load = socket_load,
1879
8a0867d6
LP		 1880 .kill = socket_kill,
1881
a16e1123 1882 .coldplug = socket_coldplug,
034c6ed7 1883
5cb5a6ff
LP		 1884 .dump = socket_dump,
1885
542563ba
LP		 1886 .start = socket_start,
1887 .stop = socket_stop,
5cb5a6ff 1888
a16e1123
LP		 1889 .serialize = socket_serialize,
1890 .deserialize_item = socket_deserialize_item,
1891
5cb5a6ff 1892 .active_state = socket_active_state,
10a94420 1893 .sub_state_to_string = socket_sub_state_to_string,
5cb5a6ff 1894
6cf6bbc2
LP		 1895 .check_gc = socket_check_gc,
1896
9152c765 1897 .fd_event = socket_fd_event,
034c6ed7 1898 .sigchld_event = socket_sigchld_event,
4139c1b2
LP		 1899 .timer_event = socket_timer_event,
1900
fdf20a31 1901 .reset_failed = socket_reset_failed,
5632e374 1902
c4e2ceae
LP		 1903 .bus_interface = "org.freedesktop.systemd1.Socket",
1904 .bus_message_handler = bus_socket_message_handler,
1905 .bus_invalidating_properties = bus_socket_invalidating_properties
5cb5a6ff 1906};
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