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 bool socket_has_exec(Socket *s) {
330 for (i = 0; i < _SOCKET_EXEC_COMMAND_MAX; i++)
331 if (s->exec_command[i])
337 static int socket_load(Unit *u) {
338 Socket *s = SOCKET(u);
342 assert(u->meta.load_state == UNIT_STUB);
344 if ((r = unit_load_fragment_and_dropin(u)) < 0)
347 /* This is a new unit? Then let's add in some extras */
348 if (u->meta.load_state == UNIT_LOADED) {
350 if (have_non_accept_socket(s)) {
353 if ((r = unit_load_related_unit(u, ".service", (Unit**) &s->service)) < 0)
356 if ((r = unit_add_dependency(u, UNIT_BEFORE, UNIT(s->service), true)) < 0)
360 if ((r = socket_add_mount_links(s)) < 0)
363 if ((r = socket_add_device_link(s)) < 0)
366 if (socket_has_exec(s))
367 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
370 if ((r = unit_add_default_cgroups(u)) < 0)
373 if (s->meta.default_dependencies)
374 if ((r = socket_add_default_dependencies(s)) < 0)
378 return socket_verify(s);
381 static const char* listen_lookup(int family, int type) {
383 if (family == AF_NETLINK)
384 return "ListenNetlink";
386 if (type == SOCK_STREAM)
387 return "ListenStream";
388 else if (type == SOCK_DGRAM)
389 return "ListenDatagram";
390 else if (type == SOCK_SEQPACKET)
391 return "ListenSequentialPacket";
393 assert_not_reached("Unknown socket type");
397 static void socket_dump(Unit *u, FILE *f, const char *prefix) {
400 Socket *s = SOCKET(u);
408 p2 = strappend(prefix, "\t");
409 prefix2 = p2 ? p2 : prefix;
412 "%sSocket State: %s\n"
413 "%sBindIPv6Only: %s\n"
415 "%sSocketMode: %04o\n"
416 "%sDirectoryMode: %04o\n"
419 "%sTransparent: %s\n"
421 "%sPassCrededentials: %s\n"
422 "%sTCPCongestion: %s\n",
423 prefix, socket_state_to_string(s->state),
424 prefix, socket_address_bind_ipv6_only_to_string(s->bind_ipv6_only),
426 prefix, s->socket_mode,
427 prefix, s->directory_mode,
428 prefix, yes_no(s->keep_alive),
429 prefix, yes_no(s->free_bind),
430 prefix, yes_no(s->transparent),
431 prefix, yes_no(s->broadcast),
432 prefix, yes_no(s->pass_cred),
433 prefix, strna(s->tcp_congestion));
435 if (s->control_pid > 0)
437 "%sControl PID: %lu\n",
438 prefix, (unsigned long) s->control_pid);
440 if (s->bind_to_device)
442 "%sBindToDevice: %s\n",
443 prefix, s->bind_to_device);
448 "%sNConnections: %u\n"
449 "%sMaxConnections: %u\n",
450 prefix, s->n_accepted,
451 prefix, s->n_connections,
452 prefix, s->max_connections);
454 if (s->priority >= 0)
457 prefix, s->priority);
459 if (s->receive_buffer > 0)
461 "%sReceiveBuffer: %zu\n",
462 prefix, s->receive_buffer);
464 if (s->send_buffer > 0)
466 "%sSendBuffer: %zu\n",
467 prefix, s->send_buffer);
479 if (s->pipe_size > 0)
482 prefix, s->pipe_size);
489 if (s->mq_maxmsg > 0)
491 "%sMessageQueueMaxMessages: %li\n",
492 prefix, s->mq_maxmsg);
494 if (s->mq_msgsize > 0)
496 "%sMessageQueueMessageSize: %li\n",
497 prefix, s->mq_msgsize);
499 LIST_FOREACH(port, p, s->ports) {
501 if (p->type == SOCKET_SOCKET) {
506 if ((r = socket_address_print(&p->address, &k)) < 0)
511 fprintf(f, "%s%s: %s\n", prefix, listen_lookup(socket_address_family(&p->address), p->address.type), t);
513 } else if (p->type == SOCKET_SPECIAL)
514 fprintf(f, "%sListenSpecial: %s\n", prefix, p->path);
515 else if (p->type == SOCKET_MQUEUE)
516 fprintf(f, "%sListenMessageQueue: %s\n", prefix, p->path);
518 fprintf(f, "%sListenFIFO: %s\n", prefix, p->path);
521 exec_context_dump(&s->exec_context, f, prefix);
523 for (c = 0; c < _SOCKET_EXEC_COMMAND_MAX; c++) {
524 if (!s->exec_command[c])
527 fprintf(f, "%s-> %s:\n",
528 prefix, socket_exec_command_to_string(c));
530 exec_command_dump_list(s->exec_command[c], f, prefix2);
536 static int instance_from_socket(int fd, unsigned nr, char **instance) {
541 struct sockaddr_un un;
542 struct sockaddr_in in;
543 struct sockaddr_in6 in6;
544 struct sockaddr_storage storage;
551 if (getsockname(fd, &local.sa, &l) < 0)
555 if (getpeername(fd, &remote.sa, &l) < 0)
558 switch (local.sa.sa_family) {
562 a = ntohl(local.in.sin_addr.s_addr),
563 b = ntohl(remote.in.sin_addr.s_addr);
566 "%u.%u.%u.%u:%u-%u.%u.%u.%u:%u",
567 a >> 24, (a >> 16) & 0xFF, (a >> 8) & 0xFF, a & 0xFF,
568 ntohs(local.in.sin_port),
569 b >> 24, (b >> 16) & 0xFF, (b >> 8) & 0xFF, b & 0xFF,
570 ntohs(remote.in.sin_port)) < 0)
577 static const char ipv4_prefix[] = {
578 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF
581 if (memcmp(&local.in6.sin6_addr, ipv4_prefix, sizeof(ipv4_prefix)) == 0 &&
582 memcmp(&remote.in6.sin6_addr, ipv4_prefix, sizeof(ipv4_prefix)) == 0) {
584 *a = local.in6.sin6_addr.s6_addr+12,
585 *b = remote.in6.sin6_addr.s6_addr+12;
588 "%u.%u.%u.%u:%u-%u.%u.%u.%u:%u",
589 a[0], a[1], a[2], a[3],
590 ntohs(local.in6.sin6_port),
591 b[0], b[1], b[2], b[3],
592 ntohs(remote.in6.sin6_port)) < 0)
595 char a[INET6_ADDRSTRLEN], b[INET6_ADDRSTRLEN];
599 inet_ntop(AF_INET6, &local.in6.sin6_addr, a, sizeof(a)),
600 ntohs(local.in6.sin6_port),
601 inet_ntop(AF_INET6, &remote.in6.sin6_addr, b, sizeof(b)),
602 ntohs(remote.in6.sin6_port)) < 0)
613 if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0)
619 (unsigned long) ucred.pid,
620 (unsigned long) ucred.uid) < 0)
627 assert_not_reached("Unhandled socket type.");
634 static void socket_close_fds(Socket *s) {
639 LIST_FOREACH(port, p, s->ports) {
643 unit_unwatch_fd(UNIT(s), &p->fd_watch);
644 close_nointr_nofail(p->fd);
646 /* One little note: we should never delete any sockets
647 * in the file system here! After all some other
648 * process we spawned might still have a reference of
649 * this fd and wants to continue to use it. Therefore
650 * we delete sockets in the file system before we
651 * create a new one, not after we stopped using
658 static void socket_apply_socket_options(Socket *s, int fd) {
663 int b = s->keep_alive;
664 if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &b, sizeof(b)) < 0)
665 log_warning("SO_KEEPALIVE failed: %m");
670 if (setsockopt(fd, SOL_SOCKET, SO_BROADCAST, &one, sizeof(one)) < 0)
671 log_warning("SO_BROADCAST failed: %m");
676 if (setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0)
677 log_warning("SO_PASSCRED failed: %m");
680 if (s->priority >= 0)
681 if (setsockopt(fd, SOL_SOCKET, SO_PRIORITY, &s->priority, sizeof(s->priority)) < 0)
682 log_warning("SO_PRIORITY failed: %m");
684 if (s->receive_buffer > 0) {
685 int value = (int) s->receive_buffer;
686 if (setsockopt(fd, SOL_SOCKET, SO_RCVBUFFORCE, &value, sizeof(value)) < 0)
687 log_warning("SO_RCVBUFFORCE failed: %m");
690 if (s->send_buffer > 0) {
691 int value = (int) s->send_buffer;
692 if (setsockopt(fd, SOL_SOCKET, SO_SNDBUFFORCE, &value, sizeof(value)) < 0)
693 log_warning("SO_SNDBUFFORCE failed: %m");
697 if (setsockopt(fd, SOL_SOCKET, SO_MARK, &s->mark, sizeof(s->mark)) < 0)
698 log_warning("SO_MARK failed: %m");
701 if (setsockopt(fd, IPPROTO_IP, IP_TOS, &s->ip_tos, sizeof(s->ip_tos)) < 0)
702 log_warning("IP_TOS failed: %m");
704 if (s->ip_ttl >= 0) {
707 r = setsockopt(fd, IPPROTO_IP, IP_TTL, &s->ip_ttl, sizeof(s->ip_ttl));
709 if (socket_ipv6_is_supported())
710 x = setsockopt(fd, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &s->ip_ttl, sizeof(s->ip_ttl));
713 errno = EAFNOSUPPORT;
717 log_warning("IP_TTL/IPV6_UNICAST_HOPS failed: %m");
720 if (s->tcp_congestion)
721 if (setsockopt(fd, SOL_TCP, TCP_CONGESTION, s->tcp_congestion, strlen(s->tcp_congestion)+1) < 0)
722 log_warning("TCP_CONGESTION failed: %m");
725 static void socket_apply_fifo_options(Socket *s, int fd) {
729 if (s->pipe_size > 0)
730 if (fcntl(fd, F_SETPIPE_SZ, s->pipe_size) < 0)
731 log_warning("F_SETPIPE_SZ: %m");
734 static int fifo_address_create(
736 mode_t directory_mode,
747 mkdir_parents(path, directory_mode);
749 if ((r = label_fifofile_set(path)) < 0)
752 /* Enforce the right access mode for the fifo */
753 old_mask = umask(~ socket_mode);
755 /* Include the original umask in our mask */
756 umask(~socket_mode | old_mask);
758 r = mkfifo(path, socket_mode);
761 if (r < 0 && errno != EEXIST) {
766 if ((fd = open(path, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW)) < 0) {
773 if (fstat(fd, &st) < 0) {
778 if (!S_ISFIFO(st.st_mode) ||
779 (st.st_mode & 0777) != (socket_mode & ~old_mask) ||
780 st.st_uid != getuid() ||
781 st.st_gid != getgid()) {
794 close_nointr_nofail(fd);
799 static int special_address_create(
809 if ((fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW)) < 0) {
814 if (fstat(fd, &st) < 0) {
819 /* Check whether this is a /proc, /sys or /dev file or char device */
820 if (!S_ISREG(st.st_mode) && !S_ISCHR(st.st_mode)) {
830 close_nointr_nofail(fd);
835 static int mq_address_create(
845 struct mq_attr _attr, *attr = NULL;
850 if (maxmsg > 0 && msgsize > 0) {
852 _attr.mq_flags = O_NONBLOCK;
853 _attr.mq_maxmsg = maxmsg;
854 _attr.mq_msgsize = msgsize;
858 /* Enforce the right access mode for the mq */
859 old_mask = umask(~ mq_mode);
861 /* Include the original umask in our mask */
862 umask(~mq_mode | old_mask);
864 fd = mq_open(path, O_RDONLY|O_CLOEXEC|O_NONBLOCK|O_CREAT, mq_mode, attr);
872 if (fstat(fd, &st) < 0) {
877 if ((st.st_mode & 0777) != (mq_mode & ~old_mask) ||
878 st.st_uid != getuid() ||
879 st.st_gid != getgid()) {
890 close_nointr_nofail(fd);
895 static int socket_open_fds(Socket *s) {
899 bool know_label = false;
903 LIST_FOREACH(port, p, s->ports) {
908 if (p->type == SOCKET_SOCKET) {
912 if ((r = socket_instantiate_service(s)) < 0)
915 if (s->service && s->service->exec_command[SERVICE_EXEC_START]) {
916 r = label_get_create_label_from_exe(s->service->exec_command[SERVICE_EXEC_START]->path, &label);
927 if ((r = socket_address_listen(
940 socket_apply_socket_options(s, p->fd);
942 } else if (p->type == SOCKET_SPECIAL) {
944 if ((r = special_address_create(
949 } else if (p->type == SOCKET_FIFO) {
951 if ((r = fifo_address_create(
958 socket_apply_fifo_options(s, p->fd);
959 } else if (p->type == SOCKET_MQUEUE) {
961 if ((r = mq_address_create(
969 assert_not_reached("Unknown port type");
981 static void socket_unwatch_fds(Socket *s) {
986 LIST_FOREACH(port, p, s->ports) {
990 unit_unwatch_fd(UNIT(s), &p->fd_watch);
994 static int socket_watch_fds(Socket *s) {
1000 LIST_FOREACH(port, p, s->ports) {
1004 p->fd_watch.socket_accept =
1006 p->type == SOCKET_SOCKET &&
1007 socket_address_can_accept(&p->address);
1009 if ((r = unit_watch_fd(UNIT(s), p->fd, EPOLLIN, &p->fd_watch)) < 0)
1016 socket_unwatch_fds(s);
1020 static void socket_set_state(Socket *s, SocketState state) {
1021 SocketState old_state;
1024 old_state = s->state;
1027 if (state != SOCKET_START_PRE &&
1028 state != SOCKET_START_POST &&
1029 state != SOCKET_STOP_PRE &&
1030 state != SOCKET_STOP_PRE_SIGTERM &&
1031 state != SOCKET_STOP_PRE_SIGKILL &&
1032 state != SOCKET_STOP_POST &&
1033 state != SOCKET_FINAL_SIGTERM &&
1034 state != SOCKET_FINAL_SIGKILL) {
1035 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1036 socket_unwatch_control_pid(s);
1037 s->control_command = NULL;
1038 s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID;
1041 if (state != SOCKET_LISTENING)
1042 socket_unwatch_fds(s);
1044 if (state != SOCKET_START_POST &&
1045 state != SOCKET_LISTENING &&
1046 state != SOCKET_RUNNING &&
1047 state != SOCKET_STOP_PRE &&
1048 state != SOCKET_STOP_PRE_SIGTERM &&
1049 state != SOCKET_STOP_PRE_SIGKILL)
1050 socket_close_fds(s);
1052 if (state != old_state)
1053 log_debug("%s changed %s -> %s",
1055 socket_state_to_string(old_state),
1056 socket_state_to_string(state));
1058 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], true);
1061 static int socket_coldplug(Unit *u) {
1062 Socket *s = SOCKET(u);
1066 assert(s->state == SOCKET_DEAD);
1068 if (s->deserialized_state != s->state) {
1070 if (s->deserialized_state == SOCKET_START_PRE ||
1071 s->deserialized_state == SOCKET_START_POST ||
1072 s->deserialized_state == SOCKET_STOP_PRE ||
1073 s->deserialized_state == SOCKET_STOP_PRE_SIGTERM ||
1074 s->deserialized_state == SOCKET_STOP_PRE_SIGKILL ||
1075 s->deserialized_state == SOCKET_STOP_POST ||
1076 s->deserialized_state == SOCKET_FINAL_SIGTERM ||
1077 s->deserialized_state == SOCKET_FINAL_SIGKILL) {
1079 if (s->control_pid <= 0)
1082 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1085 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1089 if (s->deserialized_state == SOCKET_START_POST ||
1090 s->deserialized_state == SOCKET_LISTENING ||
1091 s->deserialized_state == SOCKET_RUNNING ||
1092 s->deserialized_state == SOCKET_STOP_PRE ||
1093 s->deserialized_state == SOCKET_STOP_PRE_SIGTERM ||
1094 s->deserialized_state == SOCKET_STOP_PRE_SIGKILL)
1095 if ((r = socket_open_fds(s)) < 0)
1098 if (s->deserialized_state == SOCKET_LISTENING)
1099 if ((r = socket_watch_fds(s)) < 0)
1102 socket_set_state(s, s->deserialized_state);
1108 static int socket_spawn(Socket *s, ExecCommand *c, pid_t *_pid) {
1117 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1120 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1129 s->meta.manager->environment,
1133 s->meta.manager->confirm_spawn,
1134 s->meta.cgroup_bondings,
1135 s->meta.cgroup_attributes,
1142 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1143 /* FIXME: we need to do something here */
1151 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1156 static void socket_enter_dead(Socket *s, bool success) {
1162 socket_set_state(s, s->failure ? SOCKET_FAILED : SOCKET_DEAD);
1165 static void socket_enter_signal(Socket *s, SocketState state, bool success);
1167 static void socket_enter_stop_post(Socket *s, bool success) {
1174 socket_unwatch_control_pid(s);
1176 s->control_command_id = SOCKET_EXEC_STOP_POST;
1178 if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_POST])) {
1179 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
1182 socket_set_state(s, SOCKET_STOP_POST);
1184 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, true);
1189 log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
1190 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
1193 static void socket_enter_signal(Socket *s, SocketState state, bool success) {
1195 Set *pid_set = NULL;
1196 bool wait_for_exit = false;
1203 if (s->exec_context.kill_mode != KILL_NONE) {
1204 int sig = (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1206 if (s->control_pid > 0) {
1207 if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH)
1209 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1211 wait_for_exit = true;
1214 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1216 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1221 /* Exclude the control pid from being killed via the cgroup */
1222 if (s->control_pid > 0)
1223 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1226 if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig, true, pid_set)) < 0) {
1227 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
1228 log_warning("Failed to kill control group: %s", strerror(-r));
1230 wait_for_exit = true;
1237 if (wait_for_exit) {
1238 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1241 socket_set_state(s, state);
1242 } else if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL)
1243 socket_enter_stop_post(s, true);
1245 socket_enter_dead(s, true);
1250 log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
1252 if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL)
1253 socket_enter_stop_post(s, false);
1255 socket_enter_dead(s, false);
1261 static void socket_enter_stop_pre(Socket *s, bool success) {
1268 socket_unwatch_control_pid(s);
1270 s->control_command_id = SOCKET_EXEC_STOP_PRE;
1272 if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_PRE])) {
1273 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
1276 socket_set_state(s, SOCKET_STOP_PRE);
1278 socket_enter_stop_post(s, true);
1283 log_warning("%s failed to run 'stop-pre' task: %s", s->meta.id, strerror(-r));
1284 socket_enter_stop_post(s, false);
1287 static void socket_enter_listening(Socket *s) {
1291 if ((r = socket_watch_fds(s)) < 0) {
1292 log_warning("%s failed to watch sockets: %s", s->meta.id, strerror(-r));
1296 socket_set_state(s, SOCKET_LISTENING);
1300 socket_enter_stop_pre(s, false);
1303 static void socket_enter_start_post(Socket *s) {
1307 if ((r = socket_open_fds(s)) < 0) {
1308 log_warning("%s failed to listen on sockets: %s", s->meta.id, strerror(-r));
1312 socket_unwatch_control_pid(s);
1314 s->control_command_id = SOCKET_EXEC_START_POST;
1316 if ((s->control_command = s->exec_command[SOCKET_EXEC_START_POST])) {
1317 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0) {
1318 log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
1322 socket_set_state(s, SOCKET_START_POST);
1324 socket_enter_listening(s);
1329 socket_enter_stop_pre(s, false);
1332 static void socket_enter_start_pre(Socket *s) {
1336 socket_unwatch_control_pid(s);
1338 s->control_command_id = SOCKET_EXEC_START_PRE;
1340 if ((s->control_command = s->exec_command[SOCKET_EXEC_START_PRE])) {
1341 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
1344 socket_set_state(s, SOCKET_START_PRE);
1346 socket_enter_start_post(s);
1351 log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
1352 socket_enter_dead(s, false);
1355 static void socket_enter_running(Socket *s, int cfd) {
1360 dbus_error_init(&error);
1362 /* We don't take connections anymore if we are supposed to
1363 * shut down anyway */
1364 if (unit_pending_inactive(UNIT(s))) {
1365 log_debug("Suppressing connection request on %s since unit stop is scheduled.", s->meta.id);
1368 close_nointr_nofail(cfd);
1370 /* Flush all sockets by closing and reopening them */
1371 socket_close_fds(s);
1373 if ((r = socket_watch_fds(s)) < 0) {
1374 log_warning("%s failed to watch sockets: %s", s->meta.id, strerror(-r));
1375 socket_enter_stop_pre(s, false);
1383 bool pending = false;
1386 /* If there's already a start pending don't bother to
1388 LIST_FOREACH(units_by_type, i, s->meta.manager->units_by_type[UNIT_SERVICE]) {
1389 Service *service = (Service *) i;
1391 if (!set_get(service->configured_sockets, s))
1394 if (!unit_pending_active(UNIT(service)))
1402 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s->service), JOB_REPLACE, true, &error, NULL)) < 0)
1405 socket_set_state(s, SOCKET_RUNNING);
1407 char *prefix, *instance = NULL, *name;
1410 if (s->n_connections >= s->max_connections) {
1411 log_warning("Too many incoming connections (%u)", s->n_connections);
1412 close_nointr_nofail(cfd);
1416 if ((r = socket_instantiate_service(s)) < 0)
1419 if ((r = instance_from_socket(cfd, s->n_accepted, &instance)) < 0)
1422 if (!(prefix = unit_name_to_prefix(s->meta.id))) {
1428 name = unit_name_build(prefix, instance, ".service");
1437 if ((r = unit_add_name(UNIT(s->service), name)) < 0) {
1442 service = s->service;
1446 service->meta.no_gc = false;
1448 unit_choose_id(UNIT(service), name);
1451 if ((r = service_set_socket_fd(service, cfd, s)) < 0)
1455 s->n_connections ++;
1457 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(service), JOB_REPLACE, true, &error, NULL)) < 0)
1460 /* Notify clients about changed counters */
1461 unit_add_to_dbus_queue(UNIT(s));
1467 log_warning("%s failed to queue socket startup job: %s", s->meta.id, bus_error(&error, r));
1468 socket_enter_stop_pre(s, false);
1471 close_nointr_nofail(cfd);
1473 dbus_error_free(&error);
1476 static void socket_run_next(Socket *s, bool success) {
1480 assert(s->control_command);
1481 assert(s->control_command->command_next);
1486 socket_unwatch_control_pid(s);
1488 s->control_command = s->control_command->command_next;
1490 if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
1496 log_warning("%s failed to run next task: %s", s->meta.id, strerror(-r));
1498 if (s->state == SOCKET_START_POST)
1499 socket_enter_stop_pre(s, false);
1500 else if (s->state == SOCKET_STOP_POST)
1501 socket_enter_dead(s, false);
1503 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
1506 static int socket_start(Unit *u) {
1507 Socket *s = SOCKET(u);
1511 /* We cannot fulfill this request right now, try again later
1513 if (s->state == SOCKET_STOP_PRE ||
1514 s->state == SOCKET_STOP_PRE_SIGKILL ||
1515 s->state == SOCKET_STOP_PRE_SIGTERM ||
1516 s->state == SOCKET_STOP_POST ||
1517 s->state == SOCKET_FINAL_SIGTERM ||
1518 s->state == SOCKET_FINAL_SIGKILL)
1521 if (s->state == SOCKET_START_PRE ||
1522 s->state == SOCKET_START_POST)
1525 /* Cannot run this without the service being around */
1527 if (s->service->meta.load_state != UNIT_LOADED) {
1528 log_error("Socket service %s not loaded, refusing.", s->service->meta.id);
1532 /* If the service is already active we cannot start the
1534 if (s->service->state != SERVICE_DEAD &&
1535 s->service->state != SERVICE_FAILED &&
1536 s->service->state != SERVICE_AUTO_RESTART) {
1537 log_error("Socket service %s already active, refusing.", s->service->meta.id);
1541 #ifdef HAVE_SYSV_COMPAT
1542 if (s->service->sysv_path) {
1543 log_error("Using SysV services for socket activation is not supported. Refusing.");
1549 assert(s->state == SOCKET_DEAD || s->state == SOCKET_FAILED);
1552 socket_enter_start_pre(s);
1556 static int socket_stop(Unit *u) {
1557 Socket *s = SOCKET(u);
1562 if (s->state == SOCKET_STOP_PRE ||
1563 s->state == SOCKET_STOP_PRE_SIGTERM ||
1564 s->state == SOCKET_STOP_PRE_SIGKILL ||
1565 s->state == SOCKET_STOP_POST ||
1566 s->state == SOCKET_FINAL_SIGTERM ||
1567 s->state == SOCKET_FINAL_SIGKILL)
1570 /* If there's already something running we go directly into
1572 if (s->state == SOCKET_START_PRE ||
1573 s->state == SOCKET_START_POST) {
1574 socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, true);
1578 assert(s->state == SOCKET_LISTENING || s->state == SOCKET_RUNNING);
1580 socket_enter_stop_pre(s, true);
1584 static int socket_serialize(Unit *u, FILE *f, FDSet *fds) {
1585 Socket *s = SOCKET(u);
1593 unit_serialize_item(u, f, "state", socket_state_to_string(s->state));
1594 unit_serialize_item(u, f, "failure", yes_no(s->failure));
1595 unit_serialize_item_format(u, f, "n-accepted", "%u", s->n_accepted);
1597 if (s->control_pid > 0)
1598 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
1600 if (s->control_command_id >= 0)
1601 unit_serialize_item(u, f, "control-command", socket_exec_command_to_string(s->control_command_id));
1603 LIST_FOREACH(port, p, s->ports) {
1609 if ((copy = fdset_put_dup(fds, p->fd)) < 0)
1612 if (p->type == SOCKET_SOCKET) {
1615 if ((r = socket_address_print(&p->address, &t)) < 0)
1618 if (socket_address_family(&p->address) == AF_NETLINK)
1619 unit_serialize_item_format(u, f, "netlink", "%i %s", copy, t);
1621 unit_serialize_item_format(u, f, "socket", "%i %i %s", copy, p->address.type, t);
1623 } else if (p->type == SOCKET_SPECIAL)
1624 unit_serialize_item_format(u, f, "special", "%i %s", copy, p->path);
1626 assert(p->type == SOCKET_FIFO);
1627 unit_serialize_item_format(u, f, "fifo", "%i %s", copy, p->path);
1634 static int socket_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
1635 Socket *s = SOCKET(u);
1642 if (streq(key, "state")) {
1645 if ((state = socket_state_from_string(value)) < 0)
1646 log_debug("Failed to parse state value %s", value);
1648 s->deserialized_state = state;
1649 } else if (streq(key, "failure")) {
1652 if ((b = parse_boolean(value)) < 0)
1653 log_debug("Failed to parse failure value %s", value);
1655 s->failure = b || s->failure;
1657 } else if (streq(key, "n-accepted")) {
1660 if (safe_atou(value, &k) < 0)
1661 log_debug("Failed to parse n-accepted value %s", value);
1664 } else if (streq(key, "control-pid")) {
1667 if (parse_pid(value, &pid) < 0)
1668 log_debug("Failed to parse control-pid value %s", value);
1670 s->control_pid = pid;
1671 } else if (streq(key, "control-command")) {
1672 SocketExecCommand id;
1674 if ((id = socket_exec_command_from_string(value)) < 0)
1675 log_debug("Failed to parse exec-command value %s", value);
1677 s->control_command_id = id;
1678 s->control_command = s->exec_command[id];
1680 } else if (streq(key, "fifo")) {
1684 if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd))
1685 log_debug("Failed to parse fifo value %s", value);
1688 LIST_FOREACH(port, p, s->ports)
1689 if (p->type == SOCKET_FIFO &&
1690 streq_ptr(p->path, value+skip))
1695 close_nointr_nofail(p->fd);
1696 p->fd = fdset_remove(fds, fd);
1700 } else if (streq(key, "special")) {
1704 if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd))
1705 log_debug("Failed to parse special value %s", value);
1708 LIST_FOREACH(port, p, s->ports)
1709 if (p->type == SOCKET_SPECIAL &&
1710 streq_ptr(p->path, value+skip))
1715 close_nointr_nofail(p->fd);
1716 p->fd = fdset_remove(fds, fd);
1720 } else if (streq(key, "socket")) {
1721 int fd, type, skip = 0;
1724 if (sscanf(value, "%i %i %n", &fd, &type, &skip) < 2 || fd < 0 || type < 0 || !fdset_contains(fds, fd))
1725 log_debug("Failed to parse socket value %s", value);
1728 LIST_FOREACH(port, p, s->ports)
1729 if (socket_address_is(&p->address, value+skip, type))
1734 close_nointr_nofail(p->fd);
1735 p->fd = fdset_remove(fds, fd);
1739 } else if (streq(key, "netlink")) {
1743 if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd))
1744 log_debug("Failed to parse socket value %s", value);
1747 LIST_FOREACH(port, p, s->ports)
1748 if (socket_address_is_netlink(&p->address, value+skip))
1753 close_nointr_nofail(p->fd);
1754 p->fd = fdset_remove(fds, fd);
1759 log_debug("Unknown serialization key '%s'", key);
1764 static UnitActiveState socket_active_state(Unit *u) {
1767 return state_translation_table[SOCKET(u)->state];
1770 static const char *socket_sub_state_to_string(Unit *u) {
1773 return socket_state_to_string(SOCKET(u)->state);
1776 static bool socket_check_gc(Unit *u) {
1777 Socket *s = SOCKET(u);
1781 return s->n_connections > 0;
1784 static void socket_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
1785 Socket *s = SOCKET(u);
1791 if (s->state != SOCKET_LISTENING)
1794 log_debug("Incoming traffic on %s", u->meta.id);
1796 if (events != EPOLLIN) {
1798 if (events & EPOLLHUP)
1799 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);
1801 log_error("%s: Got unexpected poll event (0x%x) on socket.", u->meta.id, events);
1806 if (w->socket_accept) {
1809 if ((cfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK)) < 0) {
1814 log_error("Failed to accept socket: %m");
1821 socket_apply_socket_options(s, cfd);
1824 socket_enter_running(s, cfd);
1828 socket_enter_stop_pre(s, false);
1831 static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1832 Socket *s = SOCKET(u);
1838 if (pid != s->control_pid)
1843 success = is_clean_exit(code, status);
1845 if (s->control_command) {
1846 exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
1848 if (s->control_command->ignore)
1852 log_full(success ? LOG_DEBUG : LOG_NOTICE,
1853 "%s control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
1854 s->failure = s->failure || !success;
1856 if (s->control_command && s->control_command->command_next && success) {
1857 log_debug("%s running next command for state %s", u->meta.id, socket_state_to_string(s->state));
1858 socket_run_next(s, success);
1860 s->control_command = NULL;
1861 s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID;
1863 /* No further commands for this step, so let's figure
1864 * out what to do next */
1866 log_debug("%s got final SIGCHLD for state %s", u->meta.id, socket_state_to_string(s->state));
1870 case SOCKET_START_PRE:
1872 socket_enter_start_post(s);
1874 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
1877 case SOCKET_START_POST:
1879 socket_enter_listening(s);
1881 socket_enter_stop_pre(s, false);
1884 case SOCKET_STOP_PRE:
1885 case SOCKET_STOP_PRE_SIGTERM:
1886 case SOCKET_STOP_PRE_SIGKILL:
1887 socket_enter_stop_post(s, success);
1890 case SOCKET_STOP_POST:
1891 case SOCKET_FINAL_SIGTERM:
1892 case SOCKET_FINAL_SIGKILL:
1893 socket_enter_dead(s, success);
1897 assert_not_reached("Uh, control process died at wrong time.");
1901 /* Notify clients about changed exit status */
1902 unit_add_to_dbus_queue(u);
1905 static void socket_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
1906 Socket *s = SOCKET(u);
1909 assert(elapsed == 1);
1910 assert(w == &s->timer_watch);
1914 case SOCKET_START_PRE:
1915 log_warning("%s starting timed out. Terminating.", u->meta.id);
1916 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
1919 case SOCKET_START_POST:
1920 log_warning("%s starting timed out. Stopping.", u->meta.id);
1921 socket_enter_stop_pre(s, false);
1924 case SOCKET_STOP_PRE:
1925 log_warning("%s stopping timed out. Terminating.", u->meta.id);
1926 socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, false);
1929 case SOCKET_STOP_PRE_SIGTERM:
1930 if (s->exec_context.send_sigkill) {
1931 log_warning("%s stopping timed out. Killing.", u->meta.id);
1932 socket_enter_signal(s, SOCKET_STOP_PRE_SIGKILL, false);
1934 log_warning("%s stopping timed out. Skipping SIGKILL. Ignoring.", u->meta.id);
1935 socket_enter_stop_post(s, false);
1939 case SOCKET_STOP_PRE_SIGKILL:
1940 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
1941 socket_enter_stop_post(s, false);
1944 case SOCKET_STOP_POST:
1945 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
1946 socket_enter_signal(s, SOCKET_FINAL_SIGTERM, false);
1949 case SOCKET_FINAL_SIGTERM:
1950 if (s->exec_context.send_sigkill) {
1951 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
1952 socket_enter_signal(s, SOCKET_FINAL_SIGKILL, false);
1954 log_warning("%s stopping timed out (2). Skipping SIGKILL. Ignoring.", u->meta.id);
1955 socket_enter_dead(s, false);
1959 case SOCKET_FINAL_SIGKILL:
1960 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->meta.id);
1961 socket_enter_dead(s, false);
1965 assert_not_reached("Timeout at wrong time.");
1969 int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds) {
1978 /* Called from the service code for requesting our fds */
1981 LIST_FOREACH(port, p, s->ports)
1991 if (!(rfds = new(int, rn_fds)))
1995 LIST_FOREACH(port, p, s->ports)
1999 assert(k == rn_fds);
2007 void socket_notify_service_dead(Socket *s) {
2010 /* The service is dead. Dang!
2012 * This is strictly for one-instance-for-all-connections
2015 if (s->state == SOCKET_RUNNING) {
2016 log_debug("%s got notified about service death.", s->meta.id);
2017 socket_enter_listening(s);
2021 void socket_connection_unref(Socket *s) {
2024 /* The service is dead. Yay!
2026 * This is strictly for one-instance-per-connection
2029 assert(s->n_connections > 0);
2032 log_debug("%s: One connection closed, %u left.", s->meta.id, s->n_connections);
2035 static void socket_reset_failed(Unit *u) {
2036 Socket *s = SOCKET(u);
2040 if (s->state == SOCKET_FAILED)
2041 socket_set_state(s, SOCKET_DEAD);
2046 static int socket_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
2047 Socket *s = SOCKET(u);
2049 Set *pid_set = NULL;
2053 if (who == KILL_MAIN) {
2054 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "Socket units have no main processes");
2058 if (s->control_pid <= 0 && who == KILL_CONTROL) {
2059 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
2063 if (who == KILL_CONTROL || who == KILL_ALL)
2064 if (s->control_pid > 0)
2065 if (kill(s->control_pid, signo) < 0)
2068 if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) {
2071 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
2074 /* Exclude the control pid from being killed via the cgroup */
2075 if (s->control_pid > 0)
2076 if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
2081 if ((q = cgroup_bonding_kill_list(s->meta.cgroup_bondings, signo, false, pid_set)) < 0)
2082 if (q != -EAGAIN && q != -ESRCH && q != -ENOENT)
2093 static const char* const socket_state_table[_SOCKET_STATE_MAX] = {
2094 [SOCKET_DEAD] = "dead",
2095 [SOCKET_START_PRE] = "start-pre",
2096 [SOCKET_START_POST] = "start-post",
2097 [SOCKET_LISTENING] = "listening",
2098 [SOCKET_RUNNING] = "running",
2099 [SOCKET_STOP_PRE] = "stop-pre",
2100 [SOCKET_STOP_PRE_SIGTERM] = "stop-pre-sigterm",
2101 [SOCKET_STOP_PRE_SIGKILL] = "stop-pre-sigkill",
2102 [SOCKET_STOP_POST] = "stop-post",
2103 [SOCKET_FINAL_SIGTERM] = "final-sigterm",
2104 [SOCKET_FINAL_SIGKILL] = "final-sigkill",
2105 [SOCKET_FAILED] = "failed"
2108 DEFINE_STRING_TABLE_LOOKUP(socket_state, SocketState);
2110 static const char* const socket_exec_command_table[_SOCKET_EXEC_COMMAND_MAX] = {
2111 [SOCKET_EXEC_START_PRE] = "StartPre",
2112 [SOCKET_EXEC_START_POST] = "StartPost",
2113 [SOCKET_EXEC_STOP_PRE] = "StopPre",
2114 [SOCKET_EXEC_STOP_POST] = "StopPost"
2117 DEFINE_STRING_TABLE_LOOKUP(socket_exec_command, SocketExecCommand);
2119 const UnitVTable socket_vtable = {
2120 .suffix = ".socket",
2126 .init = socket_init,
2127 .done = socket_done,
2128 .load = socket_load,
2130 .kill = socket_kill,
2132 .coldplug = socket_coldplug,
2134 .dump = socket_dump,
2136 .start = socket_start,
2137 .stop = socket_stop,
2139 .serialize = socket_serialize,
2140 .deserialize_item = socket_deserialize_item,
2142 .active_state = socket_active_state,
2143 .sub_state_to_string = socket_sub_state_to_string,
2145 .check_gc = socket_check_gc,
2147 .fd_event = socket_fd_event,
2148 .sigchld_event = socket_sigchld_event,
2149 .timer_event = socket_timer_event,
2151 .reset_failed = socket_reset_failed,
2153 .bus_interface = "org.freedesktop.systemd1.Socket",
2154 .bus_message_handler = bus_socket_message_handler,
2155 .bus_invalidating_properties = bus_socket_invalidating_properties