1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
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.
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.
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/>.
22 #include <sys/types.h>
27 #include <sys/epoll.h>
29 #include <arpa/inet.h>
34 #include "load-dropin.h"
35 #include "load-fragment.h"
37 #include "unit-name.h"
39 static const UnitActiveState state_translation_table[_SOCKET_STATE_MAX] = {
40 [SOCKET_DEAD] = UNIT_INACTIVE,
41 [SOCKET_START_PRE] = UNIT_ACTIVATING,
42 [SOCKET_START_POST] = UNIT_ACTIVATING,
43 [SOCKET_LISTENING] = UNIT_ACTIVE,
44 [SOCKET_RUNNING] = UNIT_ACTIVE,
45 [SOCKET_STOP_PRE] = UNIT_DEACTIVATING,
46 [SOCKET_STOP_PRE_SIGTERM] = UNIT_DEACTIVATING,
47 [SOCKET_STOP_PRE_SIGKILL] = UNIT_DEACTIVATING,
48 [SOCKET_STOP_POST] = UNIT_DEACTIVATING,
49 [SOCKET_FINAL_SIGTERM] = UNIT_DEACTIVATING,
50 [SOCKET_FINAL_SIGKILL] = UNIT_DEACTIVATING,
51 [SOCKET_MAINTAINANCE] = UNIT_INACTIVE,
54 static const char* const state_string_table[_SOCKET_STATE_MAX] = {
55 [SOCKET_DEAD] = "dead",
56 [SOCKET_START_PRE] = "start-pre",
57 [SOCKET_START_POST] = "start-post",
58 [SOCKET_LISTENING] = "listening",
59 [SOCKET_RUNNING] = "running",
60 [SOCKET_STOP_PRE] = "stop-pre",
61 [SOCKET_STOP_PRE_SIGTERM] = "stop-pre-sigterm",
62 [SOCKET_STOP_PRE_SIGKILL] = "stop-pre-sigkill",
63 [SOCKET_STOP_POST] = "stop-post",
64 [SOCKET_FINAL_SIGTERM] = "final-sigterm",
65 [SOCKET_FINAL_SIGKILL] = "final-sigkill",
66 [SOCKET_MAINTAINANCE] = "maintainance"
69 static void socket_unwatch_control_pid(Socket *s) {
72 if (s->control_pid <= 0)
75 unit_unwatch_pid(UNIT(s), s->control_pid);
79 static void socket_done(Unit *u) {
80 Socket *s = SOCKET(u);
85 while ((p = s->ports)) {
86 LIST_REMOVE(SocketPort, port, s->ports, p);
94 exec_context_done(&s->exec_context);
95 exec_command_free_array(s->exec_command, _SOCKET_EXEC_COMMAND_MAX);
96 s->control_command = NULL;
98 socket_unwatch_control_pid(s);
102 free(s->bind_to_device);
103 s->bind_to_device = NULL;
105 unit_unwatch_timer(u, &s->timer_watch);
108 static void socket_init(Unit *u) {
109 Socket *s = SOCKET(u);
112 assert(u->meta.load_state == UNIT_STUB);
114 s->timer_watch.type = WATCH_INVALID;
115 s->backlog = SOMAXCONN;
116 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
117 s->directory_mode = 0755;
118 s->socket_mode = 0666;
120 exec_context_init(&s->exec_context);
123 static bool have_non_accept_socket(Socket *s) {
131 LIST_FOREACH(port, p, s->ports)
132 if (!socket_address_can_accept(&p->address))
138 static int socket_verify(Socket *s) {
141 if (UNIT(s)->meta.load_state != UNIT_LOADED)
145 log_error("%s lacks Listen setting. Refusing.", UNIT(s)->meta.id);
152 static int socket_load(Unit *u) {
153 Socket *s = SOCKET(u);
157 assert(u->meta.load_state == UNIT_STUB);
159 if ((r = unit_load_fragment_and_dropin(u)) < 0)
162 /* This is a new unit? Then let's add in some extras */
163 if (u->meta.load_state == UNIT_LOADED) {
165 if (have_non_accept_socket(s)) {
166 if ((r = unit_load_related_unit(u, ".service", (Unit**) &s->service)))
169 if ((r = unit_add_dependency(u, UNIT_BEFORE, UNIT(s->service))) < 0)
173 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
176 if ((r = unit_add_default_cgroup(u)) < 0)
180 return socket_verify(s);
183 static const char* listen_lookup(int type) {
185 if (type == SOCK_STREAM)
186 return "ListenStream";
187 else if (type == SOCK_DGRAM)
188 return "ListenDatagram";
189 else if (type == SOCK_SEQPACKET)
190 return "ListenSequentialPacket";
192 assert_not_reached("Unknown socket type");
196 static void socket_dump(Unit *u, FILE *f, const char *prefix) {
198 static const char* const command_table[_SOCKET_EXEC_COMMAND_MAX] = {
199 [SOCKET_EXEC_START_PRE] = "StartPre",
200 [SOCKET_EXEC_START_POST] = "StartPost",
201 [SOCKET_EXEC_STOP_PRE] = "StopPre",
202 [SOCKET_EXEC_STOP_POST] = "StopPost"
206 Socket *s = SOCKET(u);
214 p2 = strappend(prefix, "\t");
215 prefix2 = p2 ? p2 : prefix;
218 "%sSocket State: %s\n"
219 "%sBindIPv6Only: %s\n"
222 "%sSocketMode: %04o\n"
223 "%sDirectoryMode: %04o\n",
224 prefix, state_string_table[s->state],
225 prefix, yes_no(s->bind_ipv6_only),
227 prefix, kill_mode_to_string(s->kill_mode),
228 prefix, s->socket_mode,
229 prefix, s->directory_mode);
231 if (s->control_pid > 0)
233 "%sControl PID: %llu\n",
234 prefix, (unsigned long long) s->control_pid);
236 if (s->bind_to_device)
238 "%sBindToDevice: %s\n",
239 prefix, s->bind_to_device);
244 prefix, s->n_accepted);
246 LIST_FOREACH(port, p, s->ports) {
248 if (p->type == SOCKET_SOCKET) {
253 if ((r = socket_address_print(&p->address, &k)) < 0)
258 fprintf(f, "%s%s: %s\n", prefix, listen_lookup(p->address.type), k);
261 fprintf(f, "%sListenFIFO: %s\n", prefix, p->path);
264 exec_context_dump(&s->exec_context, f, prefix);
266 for (c = 0; c < _SOCKET_EXEC_COMMAND_MAX; c++) {
267 if (!s->exec_command[c])
270 fprintf(f, "%s→ %s:\n",
271 prefix, command_table[c]);
273 exec_command_dump_list(s->exec_command[c], f, prefix2);
279 static int instance_from_socket(int fd, unsigned nr, char **instance) {
284 struct sockaddr_un un;
285 struct sockaddr_in in;
286 struct sockaddr_in6 in6;
287 struct sockaddr_storage storage;
294 if (getsockname(fd, &local.sa, &l) < 0)
298 if (getpeername(fd, &remote.sa, &l) < 0)
301 switch (local.sa.sa_family) {
305 a = ntohl(local.in.sin_addr.s_addr),
306 b = ntohl(remote.in.sin_addr.s_addr);
309 "%u-%u.%u.%u.%u-%u-%u.%u.%u.%u-%u",
311 a >> 24, (a >> 16) & 0xFF, (a >> 8) & 0xFF, a & 0xFF,
312 ntohs(local.in.sin_port),
313 b >> 24, (b >> 16) & 0xFF, (b >> 8) & 0xFF, b & 0xFF,
314 ntohs(remote.in.sin_port)) < 0)
321 char a[INET6_ADDRSTRLEN], b[INET6_ADDRSTRLEN];
326 inet_ntop(AF_INET6, &local.in6.sin6_addr, a, sizeof(a)),
327 ntohs(local.in6.sin6_port),
328 inet_ntop(AF_INET6, &remote.in6.sin6_addr, b, sizeof(b)),
329 ntohs(remote.in6.sin6_port)) < 0)
339 if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0)
345 (unsigned long long) ucred.pid,
346 (unsigned long long) ucred.uid) < 0)
353 assert_not_reached("Unhandled socket type.");
360 static void socket_close_fds(Socket *s) {
365 LIST_FOREACH(port, p, s->ports) {
369 unit_unwatch_fd(UNIT(s), &p->fd_watch);
370 assert_se(close_nointr(p->fd) >= 0);
376 static int socket_open_fds(Socket *s) {
382 LIST_FOREACH(port, p, s->ports) {
387 if (p->type == SOCKET_SOCKET) {
389 if ((r = socket_address_listen(
401 assert(p->type == SOCKET_FIFO);
403 mkdir_parents(p->path, s->directory_mode);
405 if (mkfifo(p->path, s->socket_mode) < 0 && errno != EEXIST) {
410 if ((p->fd = open(p->path, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW)) < 0) {
415 if (fstat(p->fd, &st) < 0) {
420 /* FIXME verify user, access mode */
422 if (!S_ISFIFO(st.st_mode)) {
436 static void socket_unwatch_fds(Socket *s) {
441 LIST_FOREACH(port, p, s->ports) {
445 unit_unwatch_fd(UNIT(s), &p->fd_watch);
449 static int socket_watch_fds(Socket *s) {
455 LIST_FOREACH(port, p, s->ports) {
459 p->fd_watch.data.socket_accept =
461 socket_address_can_accept(&p->address);
463 if ((r = unit_watch_fd(UNIT(s), p->fd, EPOLLIN, &p->fd_watch)) < 0)
470 socket_unwatch_fds(s);
474 static void socket_set_state(Socket *s, SocketState state) {
475 SocketState old_state;
478 old_state = s->state;
481 if (state != SOCKET_START_PRE &&
482 state != SOCKET_START_POST &&
483 state != SOCKET_STOP_PRE &&
484 state != SOCKET_STOP_PRE_SIGTERM &&
485 state != SOCKET_STOP_PRE_SIGKILL &&
486 state != SOCKET_STOP_POST &&
487 state != SOCKET_FINAL_SIGTERM &&
488 state != SOCKET_FINAL_SIGKILL) {
489 unit_unwatch_timer(UNIT(s), &s->timer_watch);
490 socket_unwatch_control_pid(s);
491 s->control_command = NULL;
494 if (state != SOCKET_START_POST &&
495 state != SOCKET_LISTENING &&
496 state != SOCKET_RUNNING &&
497 state != SOCKET_STOP_PRE &&
498 state != SOCKET_STOP_PRE_SIGTERM &&
499 state != SOCKET_STOP_PRE_SIGKILL)
502 if (state != SOCKET_LISTENING)
503 socket_unwatch_fds(s);
505 if (state != old_state)
506 log_debug("%s changed %s → %s", s->meta.id, state_string_table[old_state], state_string_table[state]);
508 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
511 static int socket_spawn(Socket *s, ExecCommand *c, pid_t *_pid) {
520 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
523 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
534 UNIT(s)->meta.manager->confirm_spawn,
535 UNIT(s)->meta.cgroup_bondings,
542 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
543 /* FIXME: we need to do something here */
551 unit_unwatch_timer(UNIT(s), &s->timer_watch);
556 static void socket_enter_dead(Socket *s, bool success) {
562 socket_set_state(s, s->failure ? SOCKET_MAINTAINANCE : SOCKET_DEAD);
565 static void socket_enter_signal(Socket *s, SocketState state, bool success);
567 static void socket_enter_stop_post(Socket *s, bool success) {
574 socket_unwatch_control_pid(s);
576 if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_POST])) {
577 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
580 socket_set_state(s, SOCKET_STOP_POST);
582 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, true);
587 log_warning("%s failed to run stop-post executable: %s", s->meta.id, strerror(-r));
588 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
591 static void socket_enter_signal(Socket *s, SocketState state, bool success) {
600 if (s->kill_mode != KILL_NONE) {
601 int sig = (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
603 if (s->kill_mode == KILL_CONTROL_GROUP) {
605 if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) {
606 if (r != -EAGAIN && r != -ESRCH)
612 if (!sent && s->control_pid > 0)
613 if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH) {
620 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
623 socket_set_state(s, state);
624 } else if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL)
625 socket_enter_stop_post(s, true);
627 socket_enter_dead(s, true);
632 log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
634 if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL)
635 socket_enter_stop_post(s, false);
637 socket_enter_dead(s, false);
640 static void socket_enter_stop_pre(Socket *s, bool success) {
647 socket_unwatch_control_pid(s);
649 if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_PRE])) {
650 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
653 socket_set_state(s, SOCKET_STOP_PRE);
655 socket_enter_stop_post(s, true);
660 log_warning("%s failed to run stop-pre executable: %s", s->meta.id, strerror(-r));
661 socket_enter_stop_post(s, false);
664 static void socket_enter_listening(Socket *s) {
668 if ((r = socket_watch_fds(s)) < 0) {
669 log_warning("%s failed to watch sockets: %s", s->meta.id, strerror(-r));
673 socket_set_state(s, SOCKET_LISTENING);
677 socket_enter_stop_pre(s, false);
680 static void socket_enter_start_post(Socket *s) {
684 if ((r = socket_open_fds(s)) < 0) {
685 log_warning("%s failed to listen on sockets: %s", s->meta.id, strerror(-r));
689 socket_unwatch_control_pid(s);
691 if ((s->control_command = s->exec_command[SOCKET_EXEC_START_POST])) {
692 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) {
693 log_warning("%s failed to run start-post executable: %s", s->meta.id, strerror(-r));
697 socket_set_state(s, SOCKET_START_POST);
699 socket_enter_listening(s);
704 socket_enter_stop_pre(s, false);
707 static void socket_enter_start_pre(Socket *s) {
711 socket_unwatch_control_pid(s);
713 if ((s->control_command = s->exec_command[SOCKET_EXEC_START_PRE])) {
714 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
717 socket_set_state(s, SOCKET_START_PRE);
719 socket_enter_start_post(s);
724 log_warning("%s failed to run start-pre exectuable: %s", s->meta.id, strerror(-r));
725 socket_enter_dead(s, false);
728 static void socket_enter_running(Socket *s, int cfd) {
734 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s->service), JOB_REPLACE, true, NULL)) < 0)
737 socket_set_state(s, SOCKET_RUNNING);
740 char *prefix, *instance, *name;
742 if ((r = instance_from_socket(cfd, s->n_accepted++, &instance)))
745 if (!(prefix = unit_name_to_prefix(UNIT(s)->meta.id))) {
751 name = unit_name_build(prefix, instance, ".service");
758 r = manager_load_unit(UNIT(s)->meta.manager, name, NULL, &u);
764 if ((r = service_set_socket_fd(SERVICE(u), cfd) < 0))
769 if ((r = manager_add_job(u->meta.manager, JOB_START, u, JOB_REPLACE, true, NULL)) < 0)
776 log_warning("%s failed to queue socket startup job: %s", s->meta.id, strerror(-r));
777 socket_enter_stop_pre(s, false);
780 close_nointr_nofail(cfd);
783 static void socket_run_next(Socket *s, bool success) {
787 assert(s->control_command);
788 assert(s->control_command->command_next);
793 socket_unwatch_control_pid(s);
795 s->control_command = s->control_command->command_next;
797 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
803 log_warning("%s failed to run spawn next executable: %s", s->meta.id, strerror(-r));
805 if (s->state == SOCKET_START_POST)
806 socket_enter_stop_pre(s, false);
807 else if (s->state == SOCKET_STOP_POST)
808 socket_enter_dead(s, false);
810 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
813 static int socket_start(Unit *u) {
814 Socket *s = SOCKET(u);
818 /* We cannot fulfill this request right now, try again later
820 if (s->state == SOCKET_STOP_PRE ||
821 s->state == SOCKET_STOP_PRE_SIGKILL ||
822 s->state == SOCKET_STOP_PRE_SIGTERM ||
823 s->state == SOCKET_STOP_POST ||
824 s->state == SOCKET_FINAL_SIGTERM ||
825 s->state == SOCKET_FINAL_SIGKILL)
828 if (s->state == SOCKET_START_PRE ||
829 s->state == SOCKET_START_POST)
832 /* Cannot run this without the service being around */
834 if (s->service->meta.load_state != UNIT_LOADED)
837 /* If the service is alredy actvie we cannot start the
839 if (s->service->state != SERVICE_DEAD &&
840 s->service->state != SERVICE_MAINTAINANCE &&
841 s->service->state != SERVICE_AUTO_RESTART)
845 assert(s->state == SOCKET_DEAD || s->state == SOCKET_MAINTAINANCE);
848 socket_enter_start_pre(s);
852 static int socket_stop(Unit *u) {
853 Socket *s = SOCKET(u);
857 /* We cannot fulfill this request right now, try again later
859 if (s->state == SOCKET_START_PRE ||
860 s->state == SOCKET_START_POST)
864 if (s->state == SOCKET_STOP_PRE ||
865 s->state == SOCKET_STOP_PRE_SIGTERM ||
866 s->state == SOCKET_STOP_PRE_SIGKILL ||
867 s->state == SOCKET_STOP_POST ||
868 s->state == SOCKET_FINAL_SIGTERM ||
869 s->state == SOCKET_FINAL_SIGTERM)
872 assert(s->state == SOCKET_LISTENING || s->state == SOCKET_RUNNING);
874 socket_enter_stop_pre(s, true);
878 static UnitActiveState socket_active_state(Unit *u) {
881 return state_translation_table[SOCKET(u)->state];
884 static const char *socket_sub_state_to_string(Unit *u) {
887 return state_string_table[SOCKET(u)->state];
890 static void socket_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
891 Socket *s = SOCKET(u);
897 log_debug("Incoming traffic on %s", u->meta.id);
899 if (events != EPOLLIN) {
900 log_error("Got invalid poll event on socket.");
904 if (w->data.socket_accept) {
907 if ((cfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK)) < 0) {
912 log_error("Failed to accept socket: %m");
920 socket_enter_running(s, cfd);
924 socket_enter_stop_pre(s, false);
927 static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) {
928 Socket *s = SOCKET(u);
934 success = code == CLD_EXITED && status == 0;
935 s->failure = s->failure || !success;
937 assert(s->control_pid == pid);
938 assert(s->control_command);
940 exec_status_fill(&s->control_command->exec_status, pid, code, status);
943 log_debug("%s control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
945 if (s->control_command->command_next && success) {
946 log_debug("%s running next command for state %s", u->meta.id, state_string_table[s->state]);
947 socket_run_next(s, success);
949 /* No further commands for this step, so let's figure
950 * out what to do next */
952 log_debug("%s got final SIGCHLD for state %s", u->meta.id, state_string_table[s->state]);
956 case SOCKET_START_PRE:
958 socket_enter_start_post(s);
960 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
963 case SOCKET_START_POST:
965 socket_enter_listening(s);
967 socket_enter_stop_pre(s, false);
970 case SOCKET_STOP_PRE:
971 case SOCKET_STOP_PRE_SIGTERM:
972 case SOCKET_STOP_PRE_SIGKILL:
973 socket_enter_stop_post(s, success);
976 case SOCKET_STOP_POST:
977 case SOCKET_FINAL_SIGTERM:
978 case SOCKET_FINAL_SIGKILL:
979 socket_enter_dead(s, success);
983 assert_not_reached("Uh, control process died at wrong time.");
988 static void socket_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
989 Socket *s = SOCKET(u);
992 assert(elapsed == 1);
993 assert(w == &s->timer_watch);
997 case SOCKET_START_PRE:
998 log_warning("%s starting timed out. Terminating.", u->meta.id);
999 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
1001 case SOCKET_START_POST:
1002 log_warning("%s starting timed out. Stopping.", u->meta.id);
1003 socket_enter_stop_pre(s, false);
1006 case SOCKET_STOP_PRE:
1007 log_warning("%s stopping timed out. Terminating.", u->meta.id);
1008 socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, false);
1011 case SOCKET_STOP_PRE_SIGTERM:
1012 log_warning("%s stopping timed out. Killing.", u->meta.id);
1013 socket_enter_signal(s, SOCKET_STOP_PRE_SIGKILL, false);
1016 case SOCKET_STOP_PRE_SIGKILL:
1017 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
1018 socket_enter_stop_post(s, false);
1021 case SOCKET_STOP_POST:
1022 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
1023 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
1026 case SOCKET_FINAL_SIGTERM:
1027 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
1028 socket_enter_signal(s, SOCKET_FINAL_SIGKILL, false);
1031 case SOCKET_FINAL_SIGKILL:
1032 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", u->meta.id);
1033 socket_enter_dead(s, false);
1037 assert_not_reached("Timeout at wrong time.");
1041 int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds) {
1050 /* Called from the service code for requesting our fds */
1053 LIST_FOREACH(port, p, s->ports)
1057 if (!(rfds = new(int, rn_fds)) < 0)
1061 LIST_FOREACH(port, p, s->ports)
1065 assert(k == rn_fds);
1073 void socket_notify_service_dead(Socket *s) {
1076 /* The service is dead. Dang. */
1078 if (s->state == SOCKET_RUNNING) {
1079 log_debug("%s got notified about service death.", s->meta.id);
1080 socket_enter_listening(s);
1084 const UnitVTable socket_vtable = {
1085 .suffix = ".socket",
1087 .init = socket_init,
1088 .load = socket_load,
1089 .done = socket_done,
1091 .dump = socket_dump,
1093 .start = socket_start,
1094 .stop = socket_stop,
1096 .active_state = socket_active_state,
1097 .sub_state_to_string = socket_sub_state_to_string,
1099 .fd_event = socket_fd_event,
1100 .sigchld_event = socket_sigchld_event,
1101 .timer_event = socket_timer_event