+static int socket_open_fds(Socket *s) {
+ SocketPort *p;
+ int r;
+
+ assert(s);
+
+ LIST_FOREACH(port, p, s->ports) {
+
+ if (p->fd >= 0)
+ continue;
+
+ if (p->type == SOCKET_SOCKET) {
+
+ if ((r = socket_address_listen(&p->address, s->backlog, s->bind_ipv6_only, s->bind_to_device, &p->fd)) < 0)
+ goto rollback;
+
+ } else {
+ struct stat st;
+ assert(p->type == SOCKET_FIFO);
+
+ if (mkfifo(p->path, 0666 & ~s->exec_context.umask) < 0 && errno != EEXIST) {
+ r = -errno;
+ goto rollback;
+ }
+
+ if ((p->fd = open(p->path, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW)) < 0) {
+ r = -errno;
+ goto rollback;
+ }
+
+ if (fstat(p->fd, &st) < 0) {
+ r = -errno;
+ goto rollback;
+ }
+
+ /* FIXME verify user, access mode */
+
+ if (!S_ISFIFO(st.st_mode)) {
+ r = -EEXIST;
+ goto rollback;
+ }
+ }
+ }
+
+ return 0;
+
+rollback:
+ socket_close_fds(s);
+ return r;
+}
+
+static void socket_unwatch_fds(Socket *s) {
+ SocketPort *p;
+
+ assert(s);
+
+ LIST_FOREACH(port, p, s->ports) {
+ if (p->fd < 0)
+ continue;
+
+ unit_unwatch_fd(UNIT(s), &p->fd_watch);
+ }
+}
+
+static int socket_watch_fds(Socket *s) {
+ SocketPort *p;
+ int r;
+
+ assert(s);
+
+ LIST_FOREACH(port, p, s->ports) {
+ if (p->fd < 0)
+ continue;
+
+ if ((r = unit_watch_fd(UNIT(s), p->fd, POLLIN, &p->fd_watch)) < 0)
+ goto fail;
+ }
+
+ return 0;
+
+fail:
+ socket_unwatch_fds(s);
+ return r;
+}
+
+static void socket_set_state(Socket *s, SocketState state) {
+ SocketState old_state;
+ assert(s);
+
+ old_state = s->state;
+ s->state = state;
+
+ if (state != SOCKET_START_PRE &&
+ state != SOCKET_START_POST &&
+ state != SOCKET_STOP_PRE &&
+ state != SOCKET_STOP_PRE_SIGTERM &&
+ state != SOCKET_STOP_PRE_SIGKILL &&
+ state != SOCKET_STOP_POST &&
+ state != SOCKET_STOP_POST_SIGTERM &&
+ state != SOCKET_STOP_POST_SIGKILL)
+ unit_unwatch_timer(UNIT(s), &s->timer_watch);
+
+ if (state != SOCKET_START_PRE &&
+ state != SOCKET_START_POST &&
+ state != SOCKET_STOP_PRE &&
+ state != SOCKET_STOP_PRE_SIGTERM &&
+ state != SOCKET_STOP_PRE_SIGKILL &&
+ state != SOCKET_STOP_POST &&
+ state != SOCKET_STOP_POST_SIGTERM &&
+ state != SOCKET_STOP_POST_SIGKILL)
+ if (s->control_pid > 0) {
+ unit_unwatch_pid(UNIT(s), s->control_pid);
+ s->control_pid = 0;
+ }
+
+ if (state != SOCKET_START_PRE &&
+ state != SOCKET_START_POST &&
+ state != SOCKET_STOP_PRE &&
+ state != SOCKET_STOP_POST)
+ s->control_command = NULL;
+
+ if (state != SOCKET_START_POST &&
+ state != SOCKET_LISTENING &&
+ state != SOCKET_RUNNING &&
+ state != SOCKET_STOP_PRE &&
+ state != SOCKET_STOP_PRE_SIGTERM &&
+ state != SOCKET_STOP_PRE_SIGKILL)
+ socket_close_fds(s);
+
+ if (state != SOCKET_LISTENING)
+ socket_unwatch_fds(s);
+
+ log_debug("%s changing %s ā %s", unit_id(UNIT(s)), state_string_table[old_state], state_string_table[state]);
+
+ unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
+}
+
+static int socket_spawn(Socket *s, ExecCommand *c, bool timeout, pid_t *_pid) {
+ pid_t pid;
+ int r;
+
+ assert(s);
+ assert(c);
+ assert(_pid);
+
+ if (timeout) {
+ if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
+ goto fail;
+ } else
+ unit_unwatch_timer(UNIT(s), &s->timer_watch);
+
+ if ((r = exec_spawn(c, &s->exec_context, NULL, 0, &pid)) < 0)
+ goto fail;
+
+ if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
+ /* FIXME: we need to do something here */
+ goto fail;
+
+ *_pid = pid;
+
+ return 0;
+
+fail:
+ if (timeout)
+ unit_unwatch_timer(UNIT(s), &s->timer_watch);
+
+ return r;
+}
+
+static void socket_enter_dead(Socket *s, bool success) {
+ assert(s);
+
+ if (!success)
+ s->failure = true;
+
+ socket_set_state(s, s->failure ? SOCKET_MAINTAINANCE : SOCKET_DEAD);
+}
+
+static void socket_enter_stop_post(Socket *s, bool success) {
+ int r;
+ assert(s);
+
+ if (!success)
+ s->failure = true;
+
+ if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_POST])) {
+
+ if ((r = socket_spawn(s, s->control_command, true, &s->control_pid)) < 0)
+ goto fail;
+
+ socket_set_state(s, SOCKET_STOP_POST);
+ } else
+ socket_enter_dead(s, true);
+
+ return;
+
+fail:
+ log_warning("%s failed to run stop-post executable: %s", unit_id(UNIT(s)), strerror(-r));
+ socket_enter_dead(s, false);
+}
+
+static void socket_enter_signal(Socket *s, SocketState state, bool success) {
+ int r;
+
+ assert(s);
+
+ if (!success)
+ s->failure = true;
+
+ if (s->control_pid > 0) {
+ int sig;
+
+ sig = (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_POST_SIGTERM) ? SIGTERM : SIGKILL;
+
+ if (kill(s->control_pid, sig) < 0 && errno != ESRCH) {
+ r = -errno;
+ goto fail;
+ }
+
+ socket_set_state(s, state);
+ } else
+ socket_enter_dead(s, true);
+
+ return;
+
+fail:
+ log_warning("%s failed to kill processes: %s", unit_id(UNIT(s)), strerror(-r));
+
+ if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL)
+ socket_enter_stop_post(s, false);
+ else
+ socket_enter_dead(s, false);
+}
+
+static void socket_enter_stop_pre(Socket *s, bool success) {
+ int r;
+ assert(s);
+
+ if (!success)
+ s->failure = true;
+
+ if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_PRE])) {
+
+ if ((r = socket_spawn(s, s->control_command, true, &s->control_pid)) < 0)
+ goto fail;
+
+ socket_set_state(s, SOCKET_STOP_PRE);
+ } else
+ socket_enter_stop_post(s, true);
+
+ return;
+
+fail:
+ log_warning("%s failed to run stop-pre executable: %s", unit_id(UNIT(s)), strerror(-r));
+ socket_enter_stop_post(s, false);
+}
+
+static void socket_enter_start_post(Socket *s) {
+ int r;
+ assert(s);
+
+ if ((r = socket_open_fds(s)) < 0 ||
+ (r = socket_watch_fds(s)) < 0) {
+ log_warning("%s failed to listen on sockets: %s", unit_id(UNIT(s)), strerror(-r));
+ goto fail;
+ }
+
+ if ((s->control_command = s->exec_command[SOCKET_EXEC_START_POST])) {
+
+ if ((r = socket_spawn(s, s->control_command, true, &s->control_pid)) < 0) {
+ log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s)), strerror(-r));
+ goto fail;
+ }
+
+ socket_set_state(s, SOCKET_START_POST);
+ } else
+ socket_set_state(s, SOCKET_LISTENING);
+
+ return;
+
+fail:
+ socket_enter_stop_pre(s, false);
+}
+
+static void socket_enter_start_pre(Socket *s) {
+ int r;
+ assert(s);
+
+ if ((s->control_command = s->exec_command[SOCKET_EXEC_START_PRE])) {
+
+ if ((r = socket_spawn(s, s->control_command, true, &s->control_pid)) < 0)
+ goto fail;
+
+ socket_set_state(s, SOCKET_START_PRE);
+ } else
+ socket_enter_start_post(s);
+
+ return;
+
+fail:
+ log_warning("%s failed to run start-pre exectuable: %s", unit_id(UNIT(s)), strerror(-r));
+ socket_enter_dead(s, false);
+}
+
+static void socket_enter_running(Socket *s) {
+ int r;
+
+ assert(s);
+
+ if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s->service), JOB_REPLACE, true, NULL)) < 0)
+ goto fail;
+
+ socket_set_state(s, SOCKET_RUNNING);
+ return;
+
+fail:
+ log_warning("%s failed to queue socket startup job: %s", unit_id(UNIT(s)), strerror(-r));
+ socket_enter_dead(s, false);
+}
+
+static void socket_run_next(Socket *s, bool success) {
+ int r;
+
+ assert(s);
+ assert(s->control_command);
+ assert(s->control_command->command_next);
+
+ if (!success)
+ s->failure = true;
+
+ s->control_command = s->control_command->command_next;
+
+ if ((r = socket_spawn(s, s->control_command, true, &s->control_pid)) < 0)
+ goto fail;
+
+ return;
+
+fail:
+ if (s->state == SOCKET_STOP_PRE)
+ socket_enter_stop_post(s, false);
+ else if (s->state == SOCKET_STOP_POST)
+ socket_enter_dead(s, false);
+ else
+ socket_enter_stop_pre(s, false);
+}
+
+static int socket_start(Unit *u) {
+ Socket *s = SOCKET(u);
+
+ assert(s);
+
+ /* We cannot fulfill this request right now, try again later
+ * please! */
+ if (s->state == SOCKET_STOP_PRE ||
+ s->state == SOCKET_STOP_PRE_SIGKILL ||
+ s->state == SOCKET_STOP_PRE_SIGTERM ||
+ s->state == SOCKET_STOP_POST ||
+ s->state == SOCKET_STOP_POST_SIGTERM ||
+ s->state == SOCKET_STOP_POST_SIGKILL)
+ return -EAGAIN;
+
+ if (s->state == SOCKET_START_PRE ||
+ s->state == SOCKET_START_POST)
+ return 0;
+
+ /* Cannot run this without the service being around */
+ if (s->service->meta.load_state != UNIT_LOADED)
+ return -ENOENT;
+
+ assert(s->state == SOCKET_DEAD || s->state == SOCKET_MAINTAINANCE);
+
+ s->failure = false;
+ socket_enter_start_pre(s);
+ return 0;
+}
+
+static int socket_stop(Unit *u) {
+ Socket *s = SOCKET(u);