1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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 "netinet/tcp.h"
36 #include "load-dropin.h"
37 #include "load-fragment.h"
39 #include "unit-name.h"
40 #include "dbus-socket.h"
43 #include "bus-errors.h"
45 #include "exit-status.h"
48 static const UnitActiveState state_translation_table[_SOCKET_STATE_MAX] = {
49 [SOCKET_DEAD] = UNIT_INACTIVE,
50 [SOCKET_START_PRE] = UNIT_ACTIVATING,
51 [SOCKET_START_POST] = UNIT_ACTIVATING,
52 [SOCKET_LISTENING] = UNIT_ACTIVE,
53 [SOCKET_RUNNING] = UNIT_ACTIVE,
54 [SOCKET_STOP_PRE] = UNIT_DEACTIVATING,
55 [SOCKET_STOP_PRE_SIGTERM] = UNIT_DEACTIVATING,
56 [SOCKET_STOP_PRE_SIGKILL] = UNIT_DEACTIVATING,
57 [SOCKET_STOP_POST] = UNIT_DEACTIVATING,
58 [SOCKET_FINAL_SIGTERM] = UNIT_DEACTIVATING,
59 [SOCKET_FINAL_SIGKILL] = UNIT_DEACTIVATING,
60 [SOCKET_FAILED] = UNIT_FAILED
63 static void socket_init(Unit *u) {
64 Socket *s = SOCKET(u);
67 assert(u->meta.load_state == UNIT_STUB);
69 s->backlog = SOMAXCONN;
70 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
71 s->directory_mode = 0755;
72 s->socket_mode = 0666;
74 s->max_connections = 64;
81 exec_context_init(&s->exec_context);
82 s->exec_context.std_output = u->meta.manager->default_std_output;
83 s->exec_context.std_error = u->meta.manager->default_std_error;
85 s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID;
88 static void socket_unwatch_control_pid(Socket *s) {
91 if (s->control_pid <= 0)
94 unit_unwatch_pid(UNIT(s), s->control_pid);
98 static void socket_done(Unit *u) {
99 Socket *s = SOCKET(u);
105 while ((p = s->ports)) {
106 LIST_REMOVE(SocketPort, port, s->ports, p);
109 unit_unwatch_fd(UNIT(s), &p->fd_watch);
110 close_nointr_nofail(p->fd);
117 exec_context_done(&s->exec_context);
118 exec_command_free_array(s->exec_command, _SOCKET_EXEC_COMMAND_MAX);
119 s->control_command = NULL;
121 socket_unwatch_control_pid(s);
125 free(s->tcp_congestion);
126 s->tcp_congestion = NULL;
128 free(s->bind_to_device);
129 s->bind_to_device = NULL;
131 unit_unwatch_timer(u, &s->timer_watch);
133 /* Make sure no service instance refers to us anymore. */
134 LIST_FOREACH(units_by_type, i, u->meta.manager->units_by_type[UNIT_SERVICE]) {
135 Service *service = (Service *) i;
137 if (service->accept_socket == s)
138 service->accept_socket = NULL;
140 set_remove(service->configured_sockets, s);
144 static int socket_instantiate_service(Socket *s) {
151 /* This fills in s->service if it isn't filled in yet. For
152 * Accept=yes sockets we create the next connection service
153 * here. For Accept=no this is mostly a NOP since the service
154 * is figured out at load time anyway. */
161 if (!(prefix = unit_name_to_prefix(s->meta.id)))
164 r = asprintf(&name, "%s@%u.service", prefix, s->n_accepted);
170 r = manager_load_unit(s->meta.manager, name, NULL, NULL, &u);
176 #ifdef HAVE_SYSV_COMPAT
177 if (SERVICE(u)->sysv_path) {
178 log_error("Using SysV services for socket activation is not supported. Refusing.");
183 u->meta.no_gc = true;
184 s->service = SERVICE(u);
188 static bool have_non_accept_socket(Socket *s) {
196 LIST_FOREACH(port, p, s->ports) {
198 if (p->type != SOCKET_SOCKET)
201 if (!socket_address_can_accept(&p->address))
208 static int socket_verify(Socket *s) {
211 if (s->meta.load_state != UNIT_LOADED)
215 log_error("%s lacks Listen setting. Refusing.", s->meta.id);
219 if (s->accept && have_non_accept_socket(s)) {
220 log_error("%s configured for accepting sockets, but sockets are non-accepting. Refusing.", s->meta.id);
224 if (s->accept && s->max_connections <= 0) {
225 log_error("%s's MaxConnection setting too small. Refusing.", s->meta.id);
229 if (s->accept && s->service) {
230 log_error("Explicit service configuration for accepting sockets not supported on %s. Refusing.", s->meta.id);
234 if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
235 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id);
242 static bool socket_needs_mount(Socket *s, const char *prefix) {
247 LIST_FOREACH(port, p, s->ports) {
249 if (p->type == SOCKET_SOCKET) {
250 if (socket_address_needs_mount(&p->address, prefix))
252 } else if (p->type == SOCKET_FIFO || p->type == SOCKET_SPECIAL) {
253 if (path_startswith(p->path, prefix))
261 int socket_add_one_mount_link(Socket *s, Mount *m) {
267 if (s->meta.load_state != UNIT_LOADED ||
268 m->meta.load_state != UNIT_LOADED)
271 if (!socket_needs_mount(s, m->where))
274 if ((r = unit_add_two_dependencies(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, UNIT(m), true)) < 0)
280 static int socket_add_mount_links(Socket *s) {
286 LIST_FOREACH(units_by_type, other, s->meta.manager->units_by_type[UNIT_MOUNT])
287 if ((r = socket_add_one_mount_link(s, (Mount*) other)) < 0)
293 static int socket_add_device_link(Socket *s) {
299 if (!s->bind_to_device)
302 if (asprintf(&t, "/sys/subsystem/net/devices/%s", s->bind_to_device) < 0)
305 r = unit_add_node_link(UNIT(s), t, false);
311 static int socket_add_default_dependencies(Socket *s) {
315 if (s->meta.manager->running_as == MANAGER_SYSTEM) {
316 if ((r = unit_add_dependency_by_name(UNIT(s), UNIT_BEFORE, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
319 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true)) < 0)
323 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
326 static int socket_load(Unit *u) {
327 Socket *s = SOCKET(u);
331 assert(u->meta.load_state == UNIT_STUB);
333 if ((r = unit_load_fragment_and_dropin(u)) < 0)
336 /* This is a new unit? Then let's add in some extras */
337 if (u->meta.load_state == UNIT_LOADED) {
339 if (have_non_accept_socket(s)) {
342 if ((r = unit_load_related_unit(u, ".service", (Unit**) &s->service)) < 0)
345 if ((r = unit_add_dependency(u, UNIT_BEFORE, UNIT(s->service), true)) < 0)
349 if ((r = socket_add_mount_links(s)) < 0)
352 if ((r = socket_add_device_link(s)) < 0)
355 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
358 if ((r = unit_add_default_cgroups(u)) < 0)
361 if (s->meta.default_dependencies)
362 if ((r = socket_add_default_dependencies(s)) < 0)
366 return socket_verify(s);
369 static const char* listen_lookup(int family, int type) {
371 if (family == AF_NETLINK)
372 return "ListenNetlink";
374 if (type == SOCK_STREAM)
375 return "ListenStream";
376 else if (type == SOCK_DGRAM)
377 return "ListenDatagram";
378 else if (type == SOCK_SEQPACKET)
379 return "ListenSequentialPacket";
381 assert_not_reached("Unknown socket type");
385 static void socket_dump(Unit *u, FILE *f, const char *prefix) {
388 Socket *s = SOCKET(u);
396 p2 = strappend(prefix, "\t");
397 prefix2 = p2 ? p2 : prefix;
400 "%sSocket State: %s\n"
401 "%sBindIPv6Only: %s\n"
403 "%sSocketMode: %04o\n"
404 "%sDirectoryMode: %04o\n"
407 "%sTransparent: %s\n"
410 "%sTCPCongestion: %s\n",
411 prefix, socket_state_to_string(s->state),
412 prefix, socket_address_bind_ipv6_only_to_string(s->bind_ipv6_only),
414 prefix, s->socket_mode,
415 prefix, s->directory_mode,
416 prefix, yes_no(s->keep_alive),
417 prefix, yes_no(s->free_bind),
418 prefix, yes_no(s->transparent),
419 prefix, yes_no(s->broadcast),
420 prefix, yes_no(s->pass_cred),
421 prefix, strna(s->tcp_congestion));
423 if (s->control_pid > 0)
425 "%sControl PID: %lu\n",
426 prefix, (unsigned long) s->control_pid);
428 if (s->bind_to_device)
430 "%sBindToDevice: %s\n",
431 prefix, s->bind_to_device);
436 "%sNConnections: %u\n"
437 "%sMaxConnections: %u\n",
438 prefix, s->n_accepted,
439 prefix, s->n_connections,
440 prefix, s->max_connections);
442 if (s->priority >= 0)
445 prefix, s->priority);
447 if (s->receive_buffer > 0)
449 "%sReceiveBuffer: %zu\n",
450 prefix, s->receive_buffer);
452 if (s->send_buffer > 0)
454 "%sSendBuffer: %zu\n",
455 prefix, s->send_buffer);
467 if (s->pipe_size > 0)
470 prefix, s->pipe_size);
477 if (s->mq_maxmsg > 0)
479 "%sMessageQueueMaxMessages: %li\n",
480 prefix, s->mq_maxmsg);
482 if (s->mq_msgsize > 0)
484 "%sMessageQueueMessageSize: %li\n",
485 prefix, s->mq_msgsize);
487 LIST_FOREACH(port, p, s->ports) {
489 if (p->type == SOCKET_SOCKET) {
494 if ((r = socket_address_print(&p->address, &k)) < 0)
499 fprintf(f, "%s%s: %s\n", prefix, listen_lookup(socket_address_family(&p->address), p->address.type), t);
501 } else if (p->type == SOCKET_SPECIAL)
502 fprintf(f, "%sListenSpecial: %s\n", prefix, p->path);
503 else if (p->type == SOCKET_MQUEUE)
504 fprintf(f, "%sListenMessageQueue: %s\n", prefix, p->path);
506 fprintf(f, "%sListenFIFO: %s\n", prefix, p->path);
509 exec_context_dump(&s->exec_context, f, prefix);
511 for (c = 0; c < _SOCKET_EXEC_COMMAND_MAX; c++) {
512 if (!s->exec_command[c])
515 fprintf(f, "%s-> %s:\n",
516 prefix, socket_exec_command_to_string(c));
518 exec_command_dump_list(s->exec_command[c], f, prefix2);
524 static int instance_from_socket(int fd, unsigned nr, char **instance) {
529 struct sockaddr_un un;
530 struct sockaddr_in in;
531 struct sockaddr_in6 in6;
532 struct sockaddr_storage storage;
539 if (getsockname(fd, &local.sa, &l) < 0)
543 if (getpeername(fd, &remote.sa, &l) < 0)
546 switch (local.sa.sa_family) {
550 a = ntohl(local.in.sin_addr.s_addr),
551 b = ntohl(remote.in.sin_addr.s_addr);
554 "%u.%u.%u.%u:%u-%u.%u.%u.%u:%u",
555 a >> 24, (a >> 16) & 0xFF, (a >> 8) & 0xFF, a & 0xFF,
556 ntohs(local.in.sin_port),
557 b >> 24, (b >> 16) & 0xFF, (b >> 8) & 0xFF, b & 0xFF,
558 ntohs(remote.in.sin_port)) < 0)
565 static const char ipv4_prefix[] = {
566 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF
569 if (memcmp(&local.in6.sin6_addr, ipv4_prefix, sizeof(ipv4_prefix)) == 0 &&
570 memcmp(&remote.in6.sin6_addr, ipv4_prefix, sizeof(ipv4_prefix)) == 0) {
572 *a = local.in6.sin6_addr.s6_addr+12,
573 *b = remote.in6.sin6_addr.s6_addr+12;
576 "%u.%u.%u.%u:%u-%u.%u.%u.%u:%u",
577 a[0], a[1], a[2], a[3],
578 ntohs(local.in6.sin6_port),
579 b[0], b[1], b[2], b[3],
580 ntohs(remote.in6.sin6_port)) < 0)
583 char a[INET6_ADDRSTRLEN], b[INET6_ADDRSTRLEN];
587 inet_ntop(AF_INET6, &local.in6.sin6_addr, a, sizeof(a)),
588 ntohs(local.in6.sin6_port),
589 inet_ntop(AF_INET6, &remote.in6.sin6_addr, b, sizeof(b)),
590 ntohs(remote.in6.sin6_port)) < 0)
601 if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0)
607 (unsigned long) ucred.pid,
608 (unsigned long) ucred.uid) < 0)
615 assert_not_reached("Unhandled socket type.");
622 static void socket_close_fds(Socket *s) {
627 LIST_FOREACH(port, p, s->ports) {
631 unit_unwatch_fd(UNIT(s), &p->fd_watch);
632 close_nointr_nofail(p->fd);
634 /* One little note: we should never delete any sockets
635 * in the file system here! After all some other
636 * process we spawned might still have a reference of
637 * this fd and wants to continue to use it. Therefore
638 * we delete sockets in the file system before we
639 * create a new one, not after we stopped using
646 static void socket_apply_socket_options(Socket *s, int fd) {
651 int b = s->keep_alive;
652 if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &b, sizeof(b)) < 0)
653 log_warning("SO_KEEPALIVE failed: %m");
658 if (setsockopt(fd, SOL_SOCKET, SO_BROADCAST, &one, sizeof(one)) < 0)
659 log_warning("SO_BROADCAST failed: %m");
664 if (setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0)
665 log_warning("SO_PASSCRED failed: %m");
668 if (s->priority >= 0)
669 if (setsockopt(fd, SOL_SOCKET, SO_PRIORITY, &s->priority, sizeof(s->priority)) < 0)
670 log_warning("SO_PRIORITY failed: %m");
672 if (s->receive_buffer > 0) {
673 int value = (int) s->receive_buffer;
674 if (setsockopt(fd, SOL_SOCKET, SO_RCVBUFFORCE, &value, sizeof(value)) < 0)
675 log_warning("SO_RCVBUFFORCE failed: %m");
678 if (s->send_buffer > 0) {
679 int value = (int) s->send_buffer;
680 if (setsockopt(fd, SOL_SOCKET, SO_SNDBUFFORCE, &value, sizeof(value)) < 0)
681 log_warning("SO_SNDBUFFORCE failed: %m");
685 if (setsockopt(fd, SOL_SOCKET, SO_MARK, &s->mark, sizeof(s->mark)) < 0)
686 log_warning("SO_MARK failed: %m");
689 if (setsockopt(fd, IPPROTO_IP, IP_TOS, &s->ip_tos, sizeof(s->ip_tos)) < 0)
690 log_warning("IP_TOS failed: %m");
692 if (s->ip_ttl >= 0) {
695 r = setsockopt(fd, IPPROTO_IP, IP_TTL, &s->ip_ttl, sizeof(s->ip_ttl));
697 if (socket_ipv6_is_supported())
698 x = setsockopt(fd, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &s->ip_ttl, sizeof(s->ip_ttl));
701 errno = EAFNOSUPPORT;
705 log_warning("IP_TTL/IPV6_UNICAST_HOPS failed: %m");
708 if (s->tcp_congestion)
709 if (setsockopt(fd, SOL_TCP, TCP_CONGESTION, s->tcp_congestion, strlen(s->tcp_congestion)+1) < 0)
710 log_warning("TCP_CONGESTION failed: %m");
713 static void socket_apply_fifo_options(Socket *s, int fd) {
717 if (s->pipe_size > 0)
718 if (fcntl(fd, F_SETPIPE_SZ, s->pipe_size) < 0)
719 log_warning("F_SETPIPE_SZ: %m");
722 static int fifo_address_create(
724 mode_t directory_mode,
735 mkdir_parents(path, directory_mode);
737 if ((r = label_fifofile_set(path)) < 0)
740 /* Enforce the right access mode for the fifo */
741 old_mask = umask(~ socket_mode);
743 /* Include the original umask in our mask */
744 umask(~socket_mode | old_mask);
746 r = mkfifo(path, socket_mode);
749 if (r < 0 && errno != EEXIST) {
754 if ((fd = open(path, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW)) < 0) {
761 if (fstat(fd, &st) < 0) {
766 if (!S_ISFIFO(st.st_mode) ||
767 (st.st_mode & 0777) != (socket_mode & ~old_mask) ||
768 st.st_uid != getuid() ||
769 st.st_gid != getgid()) {
782 close_nointr_nofail(fd);
787 static int special_address_create(
797 if ((fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW)) < 0) {
802 if (fstat(fd, &st) < 0) {
807 /* Check whether this is a /proc, /sys or /dev file or char device */
808 if (!S_ISREG(st.st_mode) && !S_ISCHR(st.st_mode)) {
818 close_nointr_nofail(fd);
823 static int mq_address_create(
833 struct mq_attr _attr, *attr = NULL;
838 if (maxmsg > 0 && msgsize > 0) {
840 _attr.mq_flags = O_NONBLOCK;
841 _attr.mq_maxmsg = maxmsg;
842 _attr.mq_msgsize = msgsize;
846 /* Enforce the right access mode for the mq */
847 old_mask = umask(~ mq_mode);
849 /* Include the original umask in our mask */
850 umask(~mq_mode | old_mask);
852 fd = mq_open(path, O_RDONLY|O_CLOEXEC|O_NONBLOCK|O_CREAT, mq_mode, attr);
860 if (fstat(fd, &st) < 0) {
865 if ((st.st_mode & 0777) != (mq_mode & ~old_mask) ||
866 st.st_uid != getuid() ||
867 st.st_gid != getgid()) {
878 close_nointr_nofail(fd);
883 static int socket_open_fds(Socket *s) {
887 bool know_label = false;
891 LIST_FOREACH(port, p, s->ports) {
896 if (p->type == SOCKET_SOCKET) {
900 if ((r = socket_instantiate_service(s)) < 0)
903 if (s->service && s->service->exec_command[SERVICE_EXEC_START]) {
904 r = label_get_create_label_from_exe(s->service->exec_command[SERVICE_EXEC_START]->path, &label);
915 if ((r = socket_address_listen(
928 socket_apply_socket_options(s, p->fd);
930 } else if (p->type == SOCKET_SPECIAL) {
932 if ((r = special_address_create(
937 } else if (p->type == SOCKET_FIFO) {
939 if ((r = fifo_address_create(
946 socket_apply_fifo_options(s, p->fd);
947 } else if (p->type == SOCKET_MQUEUE) {
949 if ((r = mq_address_create(
957 assert_not_reached("Unknown port type");
969 static void socket_unwatch_fds(Socket *s) {
974 LIST_FOREACH(port, p, s->ports) {
978 unit_unwatch_fd(UNIT(s), &p->fd_watch);
982 static int socket_watch_fds(Socket *s) {
988 LIST_FOREACH(port, p, s->ports) {
992 p->fd_watch.socket_accept =
994 p->type == SOCKET_SOCKET &&
995 socket_address_can_accept(&p->address);
997 if ((r = unit_watch_fd(UNIT(s), p->fd, EPOLLIN, &p->fd_watch)) < 0)
1004 socket_unwatch_fds(s);
1008 static void socket_set_state(Socket *s, SocketState state) {
1009 SocketState old_state;
1012 old_state = s->state;
1015 if (state != SOCKET_START_PRE &&
1016 state != SOCKET_START_POST &&
1017 state != SOCKET_STOP_PRE &&
1018 state != SOCKET_STOP_PRE_SIGTERM &&
1019 state != SOCKET_STOP_PRE_SIGKILL &&
1020 state != SOCKET_STOP_POST &&
1021 state != SOCKET_FINAL_SIGTERM &&
1022 state != SOCKET_FINAL_SIGKILL) {
1023 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1024 socket_unwatch_control_pid(s);
1025 s->control_command = NULL;
1026 s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID;
1029 if (state != SOCKET_LISTENING)
1030 socket_unwatch_fds(s);
1032 if (state != SOCKET_START_POST &&
1033 state != SOCKET_LISTENING &&
1034 state != SOCKET_RUNNING &&
1035 state != SOCKET_STOP_PRE &&
1036 state != SOCKET_STOP_PRE_SIGTERM &&
1037 state != SOCKET_STOP_PRE_SIGKILL)
1038 socket_close_fds(s);
1040 if (state != old_state)
1041 log_debug("%s changed %s -> %s",
1043 socket_state_to_string(old_state),
1044 socket_state_to_string(state));
1046 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], true);
1049 static int socket_coldplug(Unit *u) {
1050 Socket *s = SOCKET(u);
1054 assert(s->state == SOCKET_DEAD);
1056 if (s->deserialized_state != s->state) {
1058 if (s->deserialized_state == SOCKET_START_PRE ||
1059 s->deserialized_state == SOCKET_START_POST ||
1060 s->deserialized_state == SOCKET_STOP_PRE ||
1061 s->deserialized_state == SOCKET_STOP_PRE_SIGTERM ||
1062 s->deserialized_state == SOCKET_STOP_PRE_SIGKILL ||
1063 s->deserialized_state == SOCKET_STOP_POST ||
1064 s->deserialized_state == SOCKET_FINAL_SIGTERM ||
1065 s->deserialized_state == SOCKET_FINAL_SIGKILL) {
1067 if (s->control_pid <= 0)
1070 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1073 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1077 if (s->deserialized_state == SOCKET_START_POST ||
1078 s->deserialized_state == SOCKET_LISTENING ||
1079 s->deserialized_state == SOCKET_RUNNING ||
1080 s->deserialized_state == SOCKET_STOP_PRE ||
1081 s->deserialized_state == SOCKET_STOP_PRE_SIGTERM ||
1082 s->deserialized_state == SOCKET_STOP_PRE_SIGKILL)
1083 if ((r = socket_open_fds(s)) < 0)
1086 if (s->deserialized_state == SOCKET_LISTENING)
1087 if ((r = socket_watch_fds(s)) < 0)
1090 socket_set_state(s, s->deserialized_state);
1096 static int socket_spawn(Socket *s, ExecCommand *c, pid_t *_pid) {
1105 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1108 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1117 s->meta.manager->environment,
1121 s->meta.manager->confirm_spawn,
1122 s->meta.cgroup_bondings,
1123 s->meta.cgroup_attributes,
1130 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1131 /* FIXME: we need to do something here */
1139 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1144 static void socket_enter_dead(Socket *s, bool success) {
1150 socket_set_state(s, s->failure ? SOCKET_FAILED : SOCKET_DEAD);
1153 static void socket_enter_signal(Socket *s, SocketState state, bool success);
1155 static void socket_enter_stop_post(Socket *s, bool success) {
1162 socket_unwatch_control_pid(s);
1164 s->control_command_id = SOCKET_EXEC_STOP_POST;
1166 if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_POST])) {
1167 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
1170 socket_set_state(s, SOCKET_STOP_POST);
1172 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, true);
1177 log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
1178 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
1181 static void socket_enter_signal(Socket *s, SocketState state, bool success) {
1183 Set *pid_set = NULL;
1184 bool wait_for_exit = false;
1191 if (s->exec_context.kill_mode != KILL_NONE) {
1192 int sig = (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1194 if (s->control_pid > 0) {
1195 if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH)
1197 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1199 wait_for_exit = true;
1202 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1204 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1209 /* Exclude the control pid from being killed via the cgroup */
1210 if (s->control_pid > 0)
1211 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1214 if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig, true, pid_set)) < 0) {
1215 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
1216 log_warning("Failed to kill control group: %s", strerror(-r));
1218 wait_for_exit = true;
1225 if (wait_for_exit) {
1226 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1229 socket_set_state(s, state);
1230 } else if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL)
1231 socket_enter_stop_post(s, true);
1233 socket_enter_dead(s, true);
1238 log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
1240 if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL)
1241 socket_enter_stop_post(s, false);
1243 socket_enter_dead(s, false);
1249 static void socket_enter_stop_pre(Socket *s, bool success) {
1256 socket_unwatch_control_pid(s);
1258 s->control_command_id = SOCKET_EXEC_STOP_PRE;
1260 if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_PRE])) {
1261 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
1264 socket_set_state(s, SOCKET_STOP_PRE);
1266 socket_enter_stop_post(s, true);
1271 log_warning("%s failed to run 'stop-pre' task: %s", s->meta.id, strerror(-r));
1272 socket_enter_stop_post(s, false);
1275 static void socket_enter_listening(Socket *s) {
1279 if ((r = socket_watch_fds(s)) < 0) {
1280 log_warning("%s failed to watch sockets: %s", s->meta.id, strerror(-r));
1284 socket_set_state(s, SOCKET_LISTENING);
1288 socket_enter_stop_pre(s, false);
1291 static void socket_enter_start_post(Socket *s) {
1295 if ((r = socket_open_fds(s)) < 0) {
1296 log_warning("%s failed to listen on sockets: %s", s->meta.id, strerror(-r));
1300 socket_unwatch_control_pid(s);
1302 s->control_command_id = SOCKET_EXEC_START_POST;
1304 if ((s->control_command = s->exec_command[SOCKET_EXEC_START_POST])) {
1305 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) {
1306 log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
1310 socket_set_state(s, SOCKET_START_POST);
1312 socket_enter_listening(s);
1317 socket_enter_stop_pre(s, false);
1320 static void socket_enter_start_pre(Socket *s) {
1324 socket_unwatch_control_pid(s);
1326 s->control_command_id = SOCKET_EXEC_START_PRE;
1328 if ((s->control_command = s->exec_command[SOCKET_EXEC_START_PRE])) {
1329 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
1332 socket_set_state(s, SOCKET_START_PRE);
1334 socket_enter_start_post(s);
1339 log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
1340 socket_enter_dead(s, false);
1343 static void socket_enter_running(Socket *s, int cfd) {
1348 dbus_error_init(&error);
1350 /* We don't take connections anymore if we are supposed to
1351 * shut down anyway */
1352 if (unit_pending_inactive(UNIT(s))) {
1353 log_debug("Suppressing connection request on %s since unit stop is scheduled.", s->meta.id);
1356 close_nointr_nofail(cfd);
1358 /* Flush all sockets by closing and reopening them */
1359 socket_close_fds(s);
1361 if ((r = socket_watch_fds(s)) < 0) {
1362 log_warning("%s failed to watch sockets: %s", s->meta.id, strerror(-r));
1363 socket_enter_stop_pre(s, false);
1371 bool pending = false;
1374 /* If there's already a start pending don't bother to
1376 LIST_FOREACH(units_by_type, i, s->meta.manager->units_by_type[UNIT_SERVICE]) {
1377 Service *service = (Service *) i;
1379 if (!set_get(service->configured_sockets, s))
1382 if (!unit_pending_active(UNIT(service)))
1390 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s->service), JOB_REPLACE, true, &error, NULL)) < 0)
1393 socket_set_state(s, SOCKET_RUNNING);
1395 char *prefix, *instance = NULL, *name;
1398 if (s->n_connections >= s->max_connections) {
1399 log_warning("Too many incoming connections (%u)", s->n_connections);
1400 close_nointr_nofail(cfd);
1404 if ((r = socket_instantiate_service(s)) < 0)
1407 if ((r = instance_from_socket(cfd, s->n_accepted, &instance)) < 0)
1410 if (!(prefix = unit_name_to_prefix(s->meta.id))) {
1416 name = unit_name_build(prefix, instance, ".service");
1425 if ((r = unit_add_name(UNIT(s->service), name)) < 0) {
1430 service = s->service;
1434 service->meta.no_gc = false;
1436 unit_choose_id(UNIT(service), name);
1439 if ((r = service_set_socket_fd(service, cfd, s)) < 0)
1443 s->n_connections ++;
1445 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(service), JOB_REPLACE, true, &error, NULL)) < 0)
1448 /* Notify clients about changed counters */
1449 unit_add_to_dbus_queue(UNIT(s));
1455 log_warning("%s failed to queue socket startup job: %s", s->meta.id, bus_error(&error, r));
1456 socket_enter_stop_pre(s, false);
1459 close_nointr_nofail(cfd);
1461 dbus_error_free(&error);
1464 static void socket_run_next(Socket *s, bool success) {
1468 assert(s->control_command);
1469 assert(s->control_command->command_next);
1474 socket_unwatch_control_pid(s);
1476 s->control_command = s->control_command->command_next;
1478 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
1484 log_warning("%s failed to run next task: %s", s->meta.id, strerror(-r));
1486 if (s->state == SOCKET_START_POST)
1487 socket_enter_stop_pre(s, false);
1488 else if (s->state == SOCKET_STOP_POST)
1489 socket_enter_dead(s, false);
1491 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
1494 static int socket_start(Unit *u) {
1495 Socket *s = SOCKET(u);
1499 /* We cannot fulfill this request right now, try again later
1501 if (s->state == SOCKET_STOP_PRE ||
1502 s->state == SOCKET_STOP_PRE_SIGKILL ||
1503 s->state == SOCKET_STOP_PRE_SIGTERM ||
1504 s->state == SOCKET_STOP_POST ||
1505 s->state == SOCKET_FINAL_SIGTERM ||
1506 s->state == SOCKET_FINAL_SIGKILL)
1509 if (s->state == SOCKET_START_PRE ||
1510 s->state == SOCKET_START_POST)
1513 /* Cannot run this without the service being around */
1515 if (s->service->meta.load_state != UNIT_LOADED) {
1516 log_error("Socket service %s not loaded, refusing.", s->service->meta.id);
1520 /* If the service is already active we cannot start the
1522 if (s->service->state != SERVICE_DEAD &&
1523 s->service->state != SERVICE_FAILED &&
1524 s->service->state != SERVICE_AUTO_RESTART) {
1525 log_error("Socket service %s already active, refusing.", s->service->meta.id);
1529 #ifdef HAVE_SYSV_COMPAT
1530 if (s->service->sysv_path) {
1531 log_error("Using SysV services for socket activation is not supported. Refusing.");
1537 assert(s->state == SOCKET_DEAD || s->state == SOCKET_FAILED);
1540 socket_enter_start_pre(s);
1544 static int socket_stop(Unit *u) {
1545 Socket *s = SOCKET(u);
1550 if (s->state == SOCKET_STOP_PRE ||
1551 s->state == SOCKET_STOP_PRE_SIGTERM ||
1552 s->state == SOCKET_STOP_PRE_SIGKILL ||
1553 s->state == SOCKET_STOP_POST ||
1554 s->state == SOCKET_FINAL_SIGTERM ||
1555 s->state == SOCKET_FINAL_SIGKILL)
1558 /* If there's already something running we go directly into
1560 if (s->state == SOCKET_START_PRE ||
1561 s->state == SOCKET_START_POST) {
1562 socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, true);
1566 assert(s->state == SOCKET_LISTENING || s->state == SOCKET_RUNNING);
1568 socket_enter_stop_pre(s, true);
1572 static int socket_serialize(Unit *u, FILE *f, FDSet *fds) {
1573 Socket *s = SOCKET(u);
1581 unit_serialize_item(u, f, "state", socket_state_to_string(s->state));
1582 unit_serialize_item(u, f, "failure", yes_no(s->failure));
1583 unit_serialize_item_format(u, f, "n-accepted", "%u", s->n_accepted);
1585 if (s->control_pid > 0)
1586 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
1588 if (s->control_command_id >= 0)
1589 unit_serialize_item(u, f, "control-command", socket_exec_command_to_string(s->control_command_id));
1591 LIST_FOREACH(port, p, s->ports) {
1597 if ((copy = fdset_put_dup(fds, p->fd)) < 0)
1600 if (p->type == SOCKET_SOCKET) {
1603 if ((r = socket_address_print(&p->address, &t)) < 0)
1606 if (socket_address_family(&p->address) == AF_NETLINK)
1607 unit_serialize_item_format(u, f, "netlink", "%i %s", copy, t);
1609 unit_serialize_item_format(u, f, "socket", "%i %i %s", copy, p->address.type, t);
1611 } else if (p->type == SOCKET_SPECIAL)
1612 unit_serialize_item_format(u, f, "special", "%i %s", copy, p->path);
1614 assert(p->type == SOCKET_FIFO);
1615 unit_serialize_item_format(u, f, "fifo", "%i %s", copy, p->path);
1622 static int socket_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
1623 Socket *s = SOCKET(u);
1630 if (streq(key, "state")) {
1633 if ((state = socket_state_from_string(value)) < 0)
1634 log_debug("Failed to parse state value %s", value);
1636 s->deserialized_state = state;
1637 } else if (streq(key, "failure")) {
1640 if ((b = parse_boolean(value)) < 0)
1641 log_debug("Failed to parse failure value %s", value);
1643 s->failure = b || s->failure;
1645 } else if (streq(key, "n-accepted")) {
1648 if (safe_atou(value, &k) < 0)
1649 log_debug("Failed to parse n-accepted value %s", value);
1652 } else if (streq(key, "control-pid")) {
1655 if (parse_pid(value, &pid) < 0)
1656 log_debug("Failed to parse control-pid value %s", value);
1658 s->control_pid = pid;
1659 } else if (streq(key, "control-command")) {
1660 SocketExecCommand id;
1662 if ((id = socket_exec_command_from_string(value)) < 0)
1663 log_debug("Failed to parse exec-command value %s", value);
1665 s->control_command_id = id;
1666 s->control_command = s->exec_command[id];
1668 } else if (streq(key, "fifo")) {
1672 if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd))
1673 log_debug("Failed to parse fifo value %s", value);
1676 LIST_FOREACH(port, p, s->ports)
1677 if (p->type == SOCKET_FIFO &&
1678 streq_ptr(p->path, value+skip))
1683 close_nointr_nofail(p->fd);
1684 p->fd = fdset_remove(fds, fd);
1688 } else if (streq(key, "special")) {
1692 if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd))
1693 log_debug("Failed to parse special value %s", value);
1696 LIST_FOREACH(port, p, s->ports)
1697 if (p->type == SOCKET_SPECIAL &&
1698 streq_ptr(p->path, value+skip))
1703 close_nointr_nofail(p->fd);
1704 p->fd = fdset_remove(fds, fd);
1708 } else if (streq(key, "socket")) {
1709 int fd, type, skip = 0;
1712 if (sscanf(value, "%i %i %n", &fd, &type, &skip) < 2 || fd < 0 || type < 0 || !fdset_contains(fds, fd))
1713 log_debug("Failed to parse socket value %s", value);
1716 LIST_FOREACH(port, p, s->ports)
1717 if (socket_address_is(&p->address, value+skip, type))
1722 close_nointr_nofail(p->fd);
1723 p->fd = fdset_remove(fds, fd);
1727 } else if (streq(key, "netlink")) {
1731 if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd))
1732 log_debug("Failed to parse socket value %s", value);
1735 LIST_FOREACH(port, p, s->ports)
1736 if (socket_address_is_netlink(&p->address, value+skip))
1741 close_nointr_nofail(p->fd);
1742 p->fd = fdset_remove(fds, fd);
1747 log_debug("Unknown serialization key '%s'", key);
1752 static UnitActiveState socket_active_state(Unit *u) {
1755 return state_translation_table[SOCKET(u)->state];
1758 static const char *socket_sub_state_to_string(Unit *u) {
1761 return socket_state_to_string(SOCKET(u)->state);
1764 static bool socket_check_gc(Unit *u) {
1765 Socket *s = SOCKET(u);
1769 return s->n_connections > 0;
1772 static void socket_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
1773 Socket *s = SOCKET(u);
1779 if (s->state != SOCKET_LISTENING)
1782 log_debug("Incoming traffic on %s", u->meta.id);
1784 if (events != EPOLLIN) {
1786 if (events & EPOLLHUP)
1787 log_error("%s: Got POLLHUP on a listening socket. The service probably invoked shutdown() on it, and should better not do that.", u->meta.id);
1789 log_error("%s: Got unexpected poll event (0x%x) on socket.", u->meta.id, events);
1794 if (w->socket_accept) {
1797 if ((cfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK)) < 0) {
1802 log_error("Failed to accept socket: %m");
1809 socket_apply_socket_options(s, cfd);
1812 socket_enter_running(s, cfd);
1816 socket_enter_stop_pre(s, false);
1819 static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1820 Socket *s = SOCKET(u);
1826 if (pid != s->control_pid)
1831 success = is_clean_exit(code, status);
1833 if (s->control_command) {
1834 exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
1836 if (s->control_command->ignore)
1840 log_full(success ? LOG_DEBUG : LOG_NOTICE,
1841 "%s control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
1842 s->failure = s->failure || !success;
1844 if (s->control_command && s->control_command->command_next && success) {
1845 log_debug("%s running next command for state %s", u->meta.id, socket_state_to_string(s->state));
1846 socket_run_next(s, success);
1848 s->control_command = NULL;
1849 s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID;
1851 /* No further commands for this step, so let's figure
1852 * out what to do next */
1854 log_debug("%s got final SIGCHLD for state %s", u->meta.id, socket_state_to_string(s->state));
1858 case SOCKET_START_PRE:
1860 socket_enter_start_post(s);
1862 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
1865 case SOCKET_START_POST:
1867 socket_enter_listening(s);
1869 socket_enter_stop_pre(s, false);
1872 case SOCKET_STOP_PRE:
1873 case SOCKET_STOP_PRE_SIGTERM:
1874 case SOCKET_STOP_PRE_SIGKILL:
1875 socket_enter_stop_post(s, success);
1878 case SOCKET_STOP_POST:
1879 case SOCKET_FINAL_SIGTERM:
1880 case SOCKET_FINAL_SIGKILL:
1881 socket_enter_dead(s, success);
1885 assert_not_reached("Uh, control process died at wrong time.");
1889 /* Notify clients about changed exit status */
1890 unit_add_to_dbus_queue(u);
1893 static void socket_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
1894 Socket *s = SOCKET(u);
1897 assert(elapsed == 1);
1898 assert(w == &s->timer_watch);
1902 case SOCKET_START_PRE:
1903 log_warning("%s starting timed out. Terminating.", u->meta.id);
1904 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
1907 case SOCKET_START_POST:
1908 log_warning("%s starting timed out. Stopping.", u->meta.id);
1909 socket_enter_stop_pre(s, false);
1912 case SOCKET_STOP_PRE:
1913 log_warning("%s stopping timed out. Terminating.", u->meta.id);
1914 socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, false);
1917 case SOCKET_STOP_PRE_SIGTERM:
1918 if (s->exec_context.send_sigkill) {
1919 log_warning("%s stopping timed out. Killing.", u->meta.id);
1920 socket_enter_signal(s, SOCKET_STOP_PRE_SIGKILL, false);
1922 log_warning("%s stopping timed out. Skipping SIGKILL. Ignoring.", u->meta.id);
1923 socket_enter_stop_post(s, false);
1927 case SOCKET_STOP_PRE_SIGKILL:
1928 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
1929 socket_enter_stop_post(s, false);
1932 case SOCKET_STOP_POST:
1933 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
1934 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
1937 case SOCKET_FINAL_SIGTERM:
1938 if (s->exec_context.send_sigkill) {
1939 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
1940 socket_enter_signal(s, SOCKET_FINAL_SIGKILL, false);
1942 log_warning("%s stopping timed out (2). Skipping SIGKILL. Ignoring.", u->meta.id);
1943 socket_enter_dead(s, false);
1947 case SOCKET_FINAL_SIGKILL:
1948 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->meta.id);
1949 socket_enter_dead(s, false);
1953 assert_not_reached("Timeout at wrong time.");
1957 int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds) {
1966 /* Called from the service code for requesting our fds */
1969 LIST_FOREACH(port, p, s->ports)
1979 if (!(rfds = new(int, rn_fds)))
1983 LIST_FOREACH(port, p, s->ports)
1987 assert(k == rn_fds);
1995 void socket_notify_service_dead(Socket *s) {
1998 /* The service is dead. Dang!
2000 * This is strictly for one-instance-for-all-connections
2003 if (s->state == SOCKET_RUNNING) {
2004 log_debug("%s got notified about service death.", s->meta.id);
2005 socket_enter_listening(s);
2009 void socket_connection_unref(Socket *s) {
2012 /* The service is dead. Yay!
2014 * This is strictly for one-instance-per-connection
2017 assert(s->n_connections > 0);
2020 log_debug("%s: One connection closed, %u left.", s->meta.id, s->n_connections);
2023 static void socket_reset_failed(Unit *u) {
2024 Socket *s = SOCKET(u);
2028 if (s->state == SOCKET_FAILED)
2029 socket_set_state(s, SOCKET_DEAD);
2034 static int socket_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
2035 Socket *s = SOCKET(u);
2037 Set *pid_set = NULL;
2041 if (who == KILL_MAIN) {
2042 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "Socket units have no main processes");
2046 if (s->control_pid <= 0 && who == KILL_CONTROL) {
2047 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
2051 if (who == KILL_CONTROL || who == KILL_ALL)
2052 if (s->control_pid > 0)
2053 if (kill(s->control_pid, signo) < 0)
2056 if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) {
2059 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
2062 /* Exclude the control pid from being killed via the cgroup */
2063 if (s->control_pid > 0)
2064 if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
2069 if ((q = cgroup_bonding_kill_list(s->meta.cgroup_bondings, signo, false, pid_set)) < 0)
2070 if (q != -EAGAIN && q != -ESRCH && q != -ENOENT)
2081 static const char* const socket_state_table[_SOCKET_STATE_MAX] = {
2082 [SOCKET_DEAD] = "dead",
2083 [SOCKET_START_PRE] = "start-pre",
2084 [SOCKET_START_POST] = "start-post",
2085 [SOCKET_LISTENING] = "listening",
2086 [SOCKET_RUNNING] = "running",
2087 [SOCKET_STOP_PRE] = "stop-pre",
2088 [SOCKET_STOP_PRE_SIGTERM] = "stop-pre-sigterm",
2089 [SOCKET_STOP_PRE_SIGKILL] = "stop-pre-sigkill",
2090 [SOCKET_STOP_POST] = "stop-post",
2091 [SOCKET_FINAL_SIGTERM] = "final-sigterm",
2092 [SOCKET_FINAL_SIGKILL] = "final-sigkill",
2093 [SOCKET_FAILED] = "failed"
2096 DEFINE_STRING_TABLE_LOOKUP(socket_state, SocketState);
2098 static const char* const socket_exec_command_table[_SOCKET_EXEC_COMMAND_MAX] = {
2099 [SOCKET_EXEC_START_PRE] = "StartPre",
2100 [SOCKET_EXEC_START_POST] = "StartPost",
2101 [SOCKET_EXEC_STOP_PRE] = "StopPre",
2102 [SOCKET_EXEC_STOP_POST] = "StopPost"
2105 DEFINE_STRING_TABLE_LOOKUP(socket_exec_command, SocketExecCommand);
2107 const UnitVTable socket_vtable = {
2108 .suffix = ".socket",
2114 .init = socket_init,
2115 .done = socket_done,
2116 .load = socket_load,
2118 .kill = socket_kill,
2120 .coldplug = socket_coldplug,
2122 .dump = socket_dump,
2124 .start = socket_start,
2125 .stop = socket_stop,
2127 .serialize = socket_serialize,
2128 .deserialize_item = socket_deserialize_item,
2130 .active_state = socket_active_state,
2131 .sub_state_to_string = socket_sub_state_to_string,
2133 .check_gc = socket_check_gc,
2135 .fd_event = socket_fd_event,
2136 .sigchld_event = socket_sigchld_event,
2137 .timer_event = socket_timer_event,
2139 .reset_failed = socket_reset_failed,
2141 .bus_interface = "org.freedesktop.systemd1.Socket",
2142 .bus_message_handler = bus_socket_message_handler,
2143 .bus_invalidating_properties = bus_socket_invalidating_properties