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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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#include <sys/types.h>
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#include <sys/epoll.h>
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#include <arpa/inet.h>
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#include "netinet/tcp.h"
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#include "load-dropin.h"
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#include "load-fragment.h"
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#include "unit-name.h"
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#include "dbus-socket.h"
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#include "bus-errors.h"
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#include "exit-status.h"
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static const UnitActiveState state_translation_table[_SOCKET_STATE_MAX] = {
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[SOCKET_DEAD] = UNIT_INACTIVE,
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[SOCKET_START_PRE] = UNIT_ACTIVATING,
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[SOCKET_START_POST] = UNIT_ACTIVATING,
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[SOCKET_LISTENING] = UNIT_ACTIVE,
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[SOCKET_RUNNING] = UNIT_ACTIVE,
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[SOCKET_STOP_PRE] = UNIT_DEACTIVATING,
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[SOCKET_STOP_PRE_SIGTERM] = UNIT_DEACTIVATING,
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[SOCKET_STOP_PRE_SIGKILL] = UNIT_DEACTIVATING,
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[SOCKET_STOP_POST] = UNIT_DEACTIVATING,
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[SOCKET_FINAL_SIGTERM] = UNIT_DEACTIVATING,
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[SOCKET_FINAL_SIGKILL] = UNIT_DEACTIVATING,
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[SOCKET_FAILED] = UNIT_FAILED
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static void socket_init(Unit *u) {
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Socket *s = SOCKET(u);
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assert(u->load_state == UNIT_STUB);
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s->backlog = SOMAXCONN;
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s->timeout_usec = DEFAULT_TIMEOUT_USEC;
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s->directory_mode = 0755;
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s->socket_mode = 0666;
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s->max_connections = 64;
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exec_context_init(&s->exec_context);
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s->exec_context.std_output = u->manager->default_std_output;
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s->exec_context.std_error = u->manager->default_std_error;
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s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID;
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static void socket_unwatch_control_pid(Socket *s) {
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if (s->control_pid <= 0)
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unit_unwatch_pid(UNIT(s), s->control_pid);
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static void socket_done(Unit *u) {
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Socket *s = SOCKET(u);
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while ((p = s->ports)) {
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LIST_REMOVE(SocketPort, port, s->ports, p);
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unit_unwatch_fd(UNIT(s), &p->fd_watch);
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close_nointr_nofail(p->fd);
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exec_context_done(&s->exec_context);
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exec_command_free_array(s->exec_command, _SOCKET_EXEC_COMMAND_MAX);
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s->control_command = NULL;
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socket_unwatch_control_pid(s);
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unit_ref_unset(&s->service);
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free(s->tcp_congestion);
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s->tcp_congestion = NULL;
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free(s->bind_to_device);
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s->bind_to_device = NULL;
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unit_unwatch_timer(u, &s->timer_watch);
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static int socket_instantiate_service(Socket *s) {
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/* This fills in s->service if it isn't filled in yet. For
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* Accept=yes sockets we create the next connection service
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* here. For Accept=no this is mostly a NOP since the service
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* is figured out at load time anyway. */
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if (UNIT_DEREF(s->service))
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if (!(prefix = unit_name_to_prefix(UNIT(s)->id)))
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r = asprintf(&name, "%s@%u.service", prefix, s->n_accepted);
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r = manager_load_unit(UNIT(s)->manager, name, NULL, NULL, &u);
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#ifdef HAVE_SYSV_COMPAT
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if (SERVICE(u)->sysv_path) {
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log_error("Using SysV services for socket activation is not supported. Refusing.");
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unit_ref_set(&s->service, u);
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return unit_add_two_dependencies(UNIT(s), UNIT_BEFORE, UNIT_TRIGGERS, u, false);
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static bool have_non_accept_socket(Socket *s) {
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LIST_FOREACH(port, p, s->ports) {
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if (p->type != SOCKET_SOCKET)
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if (!socket_address_can_accept(&p->address))
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static int socket_verify(Socket *s) {
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if (UNIT(s)->load_state != UNIT_LOADED)
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log_error("%s lacks Listen setting. Refusing.", UNIT(s)->id);
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if (s->accept && have_non_accept_socket(s)) {
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log_error("%s configured for accepting sockets, but sockets are non-accepting. Refusing.", UNIT(s)->id);
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if (s->accept && s->max_connections <= 0) {
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log_error("%s's MaxConnection setting too small. Refusing.", UNIT(s)->id);
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if (s->accept && UNIT_DEREF(s->service)) {
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log_error("Explicit service configuration for accepting sockets not supported on %s. Refusing.", UNIT(s)->id);
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if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
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log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id);
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static bool socket_needs_mount(Socket *s, const char *prefix) {
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LIST_FOREACH(port, p, s->ports) {
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if (p->type == SOCKET_SOCKET) {
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if (socket_address_needs_mount(&p->address, prefix))
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} else if (p->type == SOCKET_FIFO || p->type == SOCKET_SPECIAL) {
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if (path_startswith(p->path, prefix))
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int socket_add_one_mount_link(Socket *s, Mount *m) {
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if (UNIT(s)->load_state != UNIT_LOADED ||
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UNIT(m)->load_state != UNIT_LOADED)
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if (!socket_needs_mount(s, m->where))
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if ((r = unit_add_two_dependencies(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, UNIT(m), true)) < 0)
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static int socket_add_mount_links(Socket *s) {
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LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_MOUNT])
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if ((r = socket_add_one_mount_link(s, MOUNT(other))) < 0)
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static int socket_add_device_link(Socket *s) {
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if (!s->bind_to_device)
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if (asprintf(&t, "/sys/subsystem/net/devices/%s", s->bind_to_device) < 0)
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r = unit_add_node_link(UNIT(s), t, false);
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static int socket_add_default_dependencies(Socket *s) {
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if (UNIT(s)->manager->running_as == MANAGER_SYSTEM) {
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if ((r = unit_add_dependency_by_name(UNIT(s), UNIT_BEFORE, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
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if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true)) < 0)
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return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
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static bool socket_has_exec(Socket *s) {
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for (i = 0; i < _SOCKET_EXEC_COMMAND_MAX; i++)
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if (s->exec_command[i])
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static int socket_load(Unit *u) {
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Socket *s = SOCKET(u);
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assert(u->load_state == UNIT_STUB);
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if ((r = unit_load_fragment_and_dropin(u)) < 0)
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/* This is a new unit? Then let's add in some extras */
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if (u->load_state == UNIT_LOADED) {
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if (have_non_accept_socket(s)) {
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if (!UNIT_DEREF(s->service)) {
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r = unit_load_related_unit(u, ".service", &x);
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unit_ref_set(&s->service, x);
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r = unit_add_two_dependencies(u, UNIT_BEFORE, UNIT_TRIGGERS, UNIT_DEREF(s->service), true);
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if ((r = socket_add_mount_links(s)) < 0)
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if ((r = socket_add_device_link(s)) < 0)
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if (socket_has_exec(s))
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if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
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if ((r = unit_add_default_cgroups(u)) < 0)
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if (UNIT(s)->default_dependencies)
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if ((r = socket_add_default_dependencies(s)) < 0)
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return socket_verify(s);
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static const char* listen_lookup(int family, int type) {
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if (family == AF_NETLINK)
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return "ListenNetlink";
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if (type == SOCK_STREAM)
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return "ListenStream";
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else if (type == SOCK_DGRAM)
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return "ListenDatagram";
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else if (type == SOCK_SEQPACKET)
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return "ListenSequentialPacket";
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assert_not_reached("Unknown socket type");
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static void socket_dump(Unit *u, FILE *f, const char *prefix) {
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Socket *s = SOCKET(u);
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p2 = strappend(prefix, "\t");
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prefix2 = p2 ? p2 : prefix;
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"%sSocket State: %s\n"
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"%sBindIPv6Only: %s\n"
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"%sSocketMode: %04o\n"
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"%sDirectoryMode: %04o\n"
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"%sTransparent: %s\n"
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"%sPassCredentials: %s\n"
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"%sPassSecurity: %s\n"
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"%sTCPCongestion: %s\n",
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prefix, socket_state_to_string(s->state),
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prefix, socket_result_to_string(s->result),
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prefix, socket_address_bind_ipv6_only_to_string(s->bind_ipv6_only),
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prefix, s->socket_mode,
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prefix, s->directory_mode,
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prefix, yes_no(s->keep_alive),
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prefix, yes_no(s->free_bind),
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prefix, yes_no(s->transparent),
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prefix, yes_no(s->broadcast),
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prefix, yes_no(s->pass_cred),
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prefix, yes_no(s->pass_sec),
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prefix, strna(s->tcp_congestion));
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if (s->control_pid > 0)
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"%sControl PID: %lu\n",
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prefix, (unsigned long) s->control_pid);
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if (s->bind_to_device)
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"%sBindToDevice: %s\n",
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prefix, s->bind_to_device);
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"%sNConnections: %u\n"
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"%sMaxConnections: %u\n",
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prefix, s->n_accepted,
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prefix, s->n_connections,
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prefix, s->max_connections);
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if (s->priority >= 0)
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prefix, s->priority);
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if (s->receive_buffer > 0)
462
"%sReceiveBuffer: %zu\n",
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prefix, s->receive_buffer);
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if (s->send_buffer > 0)
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"%sSendBuffer: %zu\n",
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prefix, s->send_buffer);
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if (s->pipe_size > 0)
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prefix, s->pipe_size);
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if (s->mq_maxmsg > 0)
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"%sMessageQueueMaxMessages: %li\n",
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prefix, s->mq_maxmsg);
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if (s->mq_msgsize > 0)
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"%sMessageQueueMessageSize: %li\n",
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prefix, s->mq_msgsize);
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LIST_FOREACH(port, p, s->ports) {
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if (p->type == SOCKET_SOCKET) {
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if ((r = socket_address_print(&p->address, &k)) < 0)
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fprintf(f, "%s%s: %s\n", prefix, listen_lookup(socket_address_family(&p->address), p->address.type), t);
514
} else if (p->type == SOCKET_SPECIAL)
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fprintf(f, "%sListenSpecial: %s\n", prefix, p->path);
516
else if (p->type == SOCKET_MQUEUE)
517
fprintf(f, "%sListenMessageQueue: %s\n", prefix, p->path);
519
fprintf(f, "%sListenFIFO: %s\n", prefix, p->path);
522
exec_context_dump(&s->exec_context, f, prefix);
524
for (c = 0; c < _SOCKET_EXEC_COMMAND_MAX; c++) {
525
if (!s->exec_command[c])
528
fprintf(f, "%s-> %s:\n",
529
prefix, socket_exec_command_to_string(c));
531
exec_command_dump_list(s->exec_command[c], f, prefix2);
537
static int instance_from_socket(int fd, unsigned nr, char **instance) {
542
struct sockaddr_un un;
543
struct sockaddr_in in;
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struct sockaddr_in6 in6;
545
struct sockaddr_storage storage;
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if (getsockname(fd, &local.sa, &l) < 0)
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if (getpeername(fd, &remote.sa, &l) < 0)
559
switch (local.sa.sa_family) {
563
a = ntohl(local.in.sin_addr.s_addr),
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b = ntohl(remote.in.sin_addr.s_addr);
567
"%u-%u.%u.%u.%u:%u-%u.%u.%u.%u:%u",
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a >> 24, (a >> 16) & 0xFF, (a >> 8) & 0xFF, a & 0xFF,
570
ntohs(local.in.sin_port),
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b >> 24, (b >> 16) & 0xFF, (b >> 8) & 0xFF, b & 0xFF,
572
ntohs(remote.in.sin_port)) < 0)
579
static const char ipv4_prefix[] = {
580
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF
583
if (memcmp(&local.in6.sin6_addr, ipv4_prefix, sizeof(ipv4_prefix)) == 0 &&
584
memcmp(&remote.in6.sin6_addr, ipv4_prefix, sizeof(ipv4_prefix)) == 0) {
586
*a = local.in6.sin6_addr.s6_addr+12,
587
*b = remote.in6.sin6_addr.s6_addr+12;
590
"%u-%u.%u.%u.%u:%u-%u.%u.%u.%u:%u",
592
a[0], a[1], a[2], a[3],
593
ntohs(local.in6.sin6_port),
594
b[0], b[1], b[2], b[3],
595
ntohs(remote.in6.sin6_port)) < 0)
598
char a[INET6_ADDRSTRLEN], b[INET6_ADDRSTRLEN];
603
inet_ntop(AF_INET6, &local.in6.sin6_addr, a, sizeof(a)),
604
ntohs(local.in6.sin6_port),
605
inet_ntop(AF_INET6, &remote.in6.sin6_addr, b, sizeof(b)),
606
ntohs(remote.in6.sin6_port)) < 0)
617
if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0)
623
(unsigned long) ucred.pid,
624
(unsigned long) ucred.uid) < 0)
631
assert_not_reached("Unhandled socket type.");
638
static void socket_close_fds(Socket *s) {
643
LIST_FOREACH(port, p, s->ports) {
647
unit_unwatch_fd(UNIT(s), &p->fd_watch);
648
close_nointr_nofail(p->fd);
650
/* One little note: we should never delete any sockets
651
* in the file system here! After all some other
652
* process we spawned might still have a reference of
653
* this fd and wants to continue to use it. Therefore
654
* we delete sockets in the file system before we
655
* create a new one, not after we stopped using
662
static void socket_apply_socket_options(Socket *s, int fd) {
667
int b = s->keep_alive;
668
if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &b, sizeof(b)) < 0)
669
log_warning("SO_KEEPALIVE failed: %m");
674
if (setsockopt(fd, SOL_SOCKET, SO_BROADCAST, &one, sizeof(one)) < 0)
675
log_warning("SO_BROADCAST failed: %m");
680
if (setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0)
681
log_warning("SO_PASSCRED failed: %m");
686
if (setsockopt(fd, SOL_SOCKET, SO_PASSSEC, &one, sizeof(one)) < 0)
687
log_warning("SO_PASSSEC failed: %m");
690
if (s->priority >= 0)
691
if (setsockopt(fd, SOL_SOCKET, SO_PRIORITY, &s->priority, sizeof(s->priority)) < 0)
692
log_warning("SO_PRIORITY failed: %m");
694
if (s->receive_buffer > 0) {
695
int value = (int) s->receive_buffer;
697
/* We first try with SO_RCVBUFFORCE, in case we have the perms for that */
699
if (setsockopt(fd, SOL_SOCKET, SO_RCVBUFFORCE, &value, sizeof(value)) < 0)
700
if (setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &value, sizeof(value)) < 0)
701
log_warning("SO_RCVBUF failed: %m");
704
if (s->send_buffer > 0) {
705
int value = (int) s->send_buffer;
706
if (setsockopt(fd, SOL_SOCKET, SO_SNDBUFFORCE, &value, sizeof(value)) < 0)
707
if (setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &value, sizeof(value)) < 0)
708
log_warning("SO_SNDBUF failed: %m");
712
if (setsockopt(fd, SOL_SOCKET, SO_MARK, &s->mark, sizeof(s->mark)) < 0)
713
log_warning("SO_MARK failed: %m");
716
if (setsockopt(fd, IPPROTO_IP, IP_TOS, &s->ip_tos, sizeof(s->ip_tos)) < 0)
717
log_warning("IP_TOS failed: %m");
719
if (s->ip_ttl >= 0) {
722
r = setsockopt(fd, IPPROTO_IP, IP_TTL, &s->ip_ttl, sizeof(s->ip_ttl));
724
if (socket_ipv6_is_supported())
725
x = setsockopt(fd, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &s->ip_ttl, sizeof(s->ip_ttl));
728
errno = EAFNOSUPPORT;
732
log_warning("IP_TTL/IPV6_UNICAST_HOPS failed: %m");
735
if (s->tcp_congestion)
736
if (setsockopt(fd, SOL_TCP, TCP_CONGESTION, s->tcp_congestion, strlen(s->tcp_congestion)+1) < 0)
737
log_warning("TCP_CONGESTION failed: %m");
740
static void socket_apply_fifo_options(Socket *s, int fd) {
744
if (s->pipe_size > 0)
745
if (fcntl(fd, F_SETPIPE_SZ, s->pipe_size) < 0)
746
log_warning("F_SETPIPE_SZ: %m");
749
static int fifo_address_create(
751
mode_t directory_mode,
762
mkdir_parents(path, directory_mode);
764
if ((r = label_fifofile_set(path)) < 0)
767
/* Enforce the right access mode for the fifo */
768
old_mask = umask(~ socket_mode);
770
/* Include the original umask in our mask */
771
umask(~socket_mode | old_mask);
773
r = mkfifo(path, socket_mode);
776
if (r < 0 && errno != EEXIST) {
781
if ((fd = open(path, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW)) < 0) {
788
if (fstat(fd, &st) < 0) {
793
if (!S_ISFIFO(st.st_mode) ||
794
(st.st_mode & 0777) != (socket_mode & ~old_mask) ||
795
st.st_uid != getuid() ||
796
st.st_gid != getgid()) {
809
close_nointr_nofail(fd);
814
static int special_address_create(
824
if ((fd = open(path, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NONBLOCK|O_NOFOLLOW)) < 0) {
829
if (fstat(fd, &st) < 0) {
834
/* Check whether this is a /proc, /sys or /dev file or char device */
835
if (!S_ISREG(st.st_mode) && !S_ISCHR(st.st_mode)) {
845
close_nointr_nofail(fd);
850
static int mq_address_create(
860
struct mq_attr _attr, *attr = NULL;
865
if (maxmsg > 0 && msgsize > 0) {
867
_attr.mq_flags = O_NONBLOCK;
868
_attr.mq_maxmsg = maxmsg;
869
_attr.mq_msgsize = msgsize;
873
/* Enforce the right access mode for the mq */
874
old_mask = umask(~ mq_mode);
876
/* Include the original umask in our mask */
877
umask(~mq_mode | old_mask);
879
fd = mq_open(path, O_RDONLY|O_CLOEXEC|O_NONBLOCK|O_CREAT, mq_mode, attr);
887
if (fstat(fd, &st) < 0) {
892
if ((st.st_mode & 0777) != (mq_mode & ~old_mask) ||
893
st.st_uid != getuid() ||
894
st.st_gid != getgid()) {
905
close_nointr_nofail(fd);
910
static int socket_open_fds(Socket *s) {
914
bool know_label = false;
918
LIST_FOREACH(port, p, s->ports) {
923
if (p->type == SOCKET_SOCKET) {
927
if ((r = socket_instantiate_service(s)) < 0)
930
if (UNIT_DEREF(s->service) &&
931
SERVICE(UNIT_DEREF(s->service))->exec_command[SERVICE_EXEC_START]) {
932
r = label_get_create_label_from_exe(SERVICE(UNIT_DEREF(s->service))->exec_command[SERVICE_EXEC_START]->path, &label);
943
if ((r = socket_address_listen(
956
socket_apply_socket_options(s, p->fd);
958
} else if (p->type == SOCKET_SPECIAL) {
960
if ((r = special_address_create(
965
} else if (p->type == SOCKET_FIFO) {
967
if ((r = fifo_address_create(
974
socket_apply_fifo_options(s, p->fd);
975
} else if (p->type == SOCKET_MQUEUE) {
977
if ((r = mq_address_create(
985
assert_not_reached("Unknown port type");
997
static void socket_unwatch_fds(Socket *s) {
1002
LIST_FOREACH(port, p, s->ports) {
1006
unit_unwatch_fd(UNIT(s), &p->fd_watch);
1010
static int socket_watch_fds(Socket *s) {
1016
LIST_FOREACH(port, p, s->ports) {
1020
p->fd_watch.socket_accept =
1022
p->type == SOCKET_SOCKET &&
1023
socket_address_can_accept(&p->address);
1025
if ((r = unit_watch_fd(UNIT(s), p->fd, EPOLLIN, &p->fd_watch)) < 0)
1032
socket_unwatch_fds(s);
1036
static void socket_set_state(Socket *s, SocketState state) {
1037
SocketState old_state;
1040
old_state = s->state;
1043
if (state != SOCKET_START_PRE &&
1044
state != SOCKET_START_POST &&
1045
state != SOCKET_STOP_PRE &&
1046
state != SOCKET_STOP_PRE_SIGTERM &&
1047
state != SOCKET_STOP_PRE_SIGKILL &&
1048
state != SOCKET_STOP_POST &&
1049
state != SOCKET_FINAL_SIGTERM &&
1050
state != SOCKET_FINAL_SIGKILL) {
1051
unit_unwatch_timer(UNIT(s), &s->timer_watch);
1052
socket_unwatch_control_pid(s);
1053
s->control_command = NULL;
1054
s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID;
1057
if (state != SOCKET_LISTENING)
1058
socket_unwatch_fds(s);
1060
if (state != SOCKET_START_POST &&
1061
state != SOCKET_LISTENING &&
1062
state != SOCKET_RUNNING &&
1063
state != SOCKET_STOP_PRE &&
1064
state != SOCKET_STOP_PRE_SIGTERM &&
1065
state != SOCKET_STOP_PRE_SIGKILL)
1066
socket_close_fds(s);
1068
if (state != old_state)
1069
log_debug("%s changed %s -> %s",
1071
socket_state_to_string(old_state),
1072
socket_state_to_string(state));
1074
unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], true);
1077
static int socket_coldplug(Unit *u) {
1078
Socket *s = SOCKET(u);
1082
assert(s->state == SOCKET_DEAD);
1084
if (s->deserialized_state != s->state) {
1086
if (s->deserialized_state == SOCKET_START_PRE ||
1087
s->deserialized_state == SOCKET_START_POST ||
1088
s->deserialized_state == SOCKET_STOP_PRE ||
1089
s->deserialized_state == SOCKET_STOP_PRE_SIGTERM ||
1090
s->deserialized_state == SOCKET_STOP_PRE_SIGKILL ||
1091
s->deserialized_state == SOCKET_STOP_POST ||
1092
s->deserialized_state == SOCKET_FINAL_SIGTERM ||
1093
s->deserialized_state == SOCKET_FINAL_SIGKILL) {
1095
if (s->control_pid <= 0)
1098
if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1101
if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1105
if (s->deserialized_state == SOCKET_START_POST ||
1106
s->deserialized_state == SOCKET_LISTENING ||
1107
s->deserialized_state == SOCKET_RUNNING ||
1108
s->deserialized_state == SOCKET_STOP_PRE ||
1109
s->deserialized_state == SOCKET_STOP_PRE_SIGTERM ||
1110
s->deserialized_state == SOCKET_STOP_PRE_SIGKILL)
1111
if ((r = socket_open_fds(s)) < 0)
1114
if (s->deserialized_state == SOCKET_LISTENING)
1115
if ((r = socket_watch_fds(s)) < 0)
1118
socket_set_state(s, s->deserialized_state);
1124
static int socket_spawn(Socket *s, ExecCommand *c, pid_t *_pid) {
1133
if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1136
if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1145
UNIT(s)->manager->environment,
1149
UNIT(s)->manager->confirm_spawn,
1150
UNIT(s)->cgroup_bondings,
1151
UNIT(s)->cgroup_attributes,
1158
if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1159
/* FIXME: we need to do something here */
1167
unit_unwatch_timer(UNIT(s), &s->timer_watch);
1172
static void socket_enter_dead(Socket *s, SocketResult f) {
1175
if (f != SOCKET_SUCCESS)
1178
socket_set_state(s, s->result != SOCKET_SUCCESS ? SOCKET_FAILED : SOCKET_DEAD);
1181
static void socket_enter_signal(Socket *s, SocketState state, SocketResult f);
1183
static void socket_enter_stop_post(Socket *s, SocketResult f) {
1187
if (f != SOCKET_SUCCESS)
1190
socket_unwatch_control_pid(s);
1192
s->control_command_id = SOCKET_EXEC_STOP_POST;
1194
if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_POST])) {
1195
if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
1198
socket_set_state(s, SOCKET_STOP_POST);
1200
socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_SUCCESS);
1205
log_warning("%s failed to run 'stop-post' task: %s", UNIT(s)->id, strerror(-r));
1206
socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_RESOURCES);
1209
static void socket_enter_signal(Socket *s, SocketState state, SocketResult f) {
1211
Set *pid_set = NULL;
1212
bool wait_for_exit = false;
1216
if (f != SOCKET_SUCCESS)
1219
if (s->exec_context.kill_mode != KILL_NONE) {
1220
int sig = (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1222
if (s->control_pid > 0) {
1223
if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH)
1225
log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1227
wait_for_exit = true;
1230
if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1232
if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1237
/* Exclude the control pid from being killed via the cgroup */
1238
if (s->control_pid > 0)
1239
if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1242
if ((r = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, sig, true, pid_set)) < 0) {
1243
if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
1244
log_warning("Failed to kill control group: %s", strerror(-r));
1246
wait_for_exit = true;
1253
if (wait_for_exit) {
1254
if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1257
socket_set_state(s, state);
1258
} else if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL)
1259
socket_enter_stop_post(s, SOCKET_SUCCESS);
1261
socket_enter_dead(s, SOCKET_SUCCESS);
1266
log_warning("%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
1268
if (state == SOCKET_STOP_PRE_SIGTERM || state == SOCKET_STOP_PRE_SIGKILL)
1269
socket_enter_stop_post(s, SOCKET_FAILURE_RESOURCES);
1271
socket_enter_dead(s, SOCKET_FAILURE_RESOURCES);
1277
static void socket_enter_stop_pre(Socket *s, SocketResult f) {
1281
if (f != SOCKET_SUCCESS)
1284
socket_unwatch_control_pid(s);
1286
s->control_command_id = SOCKET_EXEC_STOP_PRE;
1288
if ((s->control_command = s->exec_command[SOCKET_EXEC_STOP_PRE])) {
1289
if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
1292
socket_set_state(s, SOCKET_STOP_PRE);
1294
socket_enter_stop_post(s, SOCKET_SUCCESS);
1299
log_warning("%s failed to run 'stop-pre' task: %s", UNIT(s)->id, strerror(-r));
1300
socket_enter_stop_post(s, SOCKET_FAILURE_RESOURCES);
1303
static void socket_enter_listening(Socket *s) {
1307
r = socket_watch_fds(s);
1309
log_warning("%s failed to watch sockets: %s", UNIT(s)->id, strerror(-r));
1313
socket_set_state(s, SOCKET_LISTENING);
1317
socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES);
1320
static void socket_enter_start_post(Socket *s) {
1324
r = socket_open_fds(s);
1326
log_warning("%s failed to listen on sockets: %s", UNIT(s)->id, strerror(-r));
1330
socket_unwatch_control_pid(s);
1332
s->control_command_id = SOCKET_EXEC_START_POST;
1334
if ((s->control_command = s->exec_command[SOCKET_EXEC_START_POST])) {
1335
r = socket_spawn(s, s->control_command, &s->control_pid);
1337
log_warning("%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
1341
socket_set_state(s, SOCKET_START_POST);
1343
socket_enter_listening(s);
1348
socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES);
1351
static void socket_enter_start_pre(Socket *s) {
1355
socket_unwatch_control_pid(s);
1357
s->control_command_id = SOCKET_EXEC_START_PRE;
1359
if ((s->control_command = s->exec_command[SOCKET_EXEC_START_PRE])) {
1360
if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
1363
socket_set_state(s, SOCKET_START_PRE);
1365
socket_enter_start_post(s);
1370
log_warning("%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
1371
socket_enter_dead(s, SOCKET_FAILURE_RESOURCES);
1374
static void socket_enter_running(Socket *s, int cfd) {
1379
dbus_error_init(&error);
1381
/* We don't take connections anymore if we are supposed to
1382
* shut down anyway */
1383
if (unit_pending_inactive(UNIT(s))) {
1384
log_debug("Suppressing connection request on %s since unit stop is scheduled.", UNIT(s)->id);
1387
close_nointr_nofail(cfd);
1389
/* Flush all sockets by closing and reopening them */
1390
socket_close_fds(s);
1392
r = socket_watch_fds(s);
1394
log_warning("%s failed to watch sockets: %s", UNIT(s)->id, strerror(-r));
1395
socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES);
1405
bool pending = false;
1407
/* If there's already a start pending don't bother to
1409
SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERS], i)
1410
if (unit_pending_active(u)) {
1416
r = manager_add_job(UNIT(s)->manager, JOB_START, UNIT_DEREF(s->service), JOB_REPLACE, true, &error, NULL);
1421
socket_set_state(s, SOCKET_RUNNING);
1423
char *prefix, *instance = NULL, *name;
1426
if (s->n_connections >= s->max_connections) {
1427
log_warning("Too many incoming connections (%u)", s->n_connections);
1428
close_nointr_nofail(cfd);
1432
r = socket_instantiate_service(s);
1436
r = instance_from_socket(cfd, s->n_accepted, &instance);
1441
/* ENOTCONN is legitimate if TCP RST was received.
1442
* This connection is over, but the socket unit lives on. */
1443
close_nointr_nofail(cfd);
1447
prefix = unit_name_to_prefix(UNIT(s)->id);
1454
name = unit_name_build(prefix, instance, ".service");
1463
r = unit_add_name(UNIT_DEREF(s->service), name);
1469
service = SERVICE(UNIT_DEREF(s->service));
1470
unit_ref_unset(&s->service);
1473
UNIT(service)->no_gc = false;
1475
unit_choose_id(UNIT(service), name);
1478
r = service_set_socket_fd(service, cfd, s);
1483
s->n_connections ++;
1485
r = manager_add_job(UNIT(s)->manager, JOB_START, UNIT(service), JOB_REPLACE, true, &error, NULL);
1489
/* Notify clients about changed counters */
1490
unit_add_to_dbus_queue(UNIT(s));
1496
log_warning("%s failed to queue socket startup job: %s", UNIT(s)->id, bus_error(&error, r));
1499
close_nointr_nofail(cfd);
1501
dbus_error_free(&error);
1504
static void socket_run_next(Socket *s) {
1508
assert(s->control_command);
1509
assert(s->control_command->command_next);
1511
socket_unwatch_control_pid(s);
1513
s->control_command = s->control_command->command_next;
1515
if ((r = socket_spawn(s, s->control_command, &s->control_pid)) < 0)
1521
log_warning("%s failed to run next task: %s", UNIT(s)->id, strerror(-r));
1523
if (s->state == SOCKET_START_POST)
1524
socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES);
1525
else if (s->state == SOCKET_STOP_POST)
1526
socket_enter_dead(s, SOCKET_FAILURE_RESOURCES);
1528
socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_RESOURCES);
1531
static int socket_start(Unit *u) {
1532
Socket *s = SOCKET(u);
1536
/* We cannot fulfill this request right now, try again later
1538
if (s->state == SOCKET_STOP_PRE ||
1539
s->state == SOCKET_STOP_PRE_SIGKILL ||
1540
s->state == SOCKET_STOP_PRE_SIGTERM ||
1541
s->state == SOCKET_STOP_POST ||
1542
s->state == SOCKET_FINAL_SIGTERM ||
1543
s->state == SOCKET_FINAL_SIGKILL)
1546
if (s->state == SOCKET_START_PRE ||
1547
s->state == SOCKET_START_POST)
1550
/* Cannot run this without the service being around */
1551
if (UNIT_DEREF(s->service)) {
1554
service = SERVICE(UNIT_DEREF(s->service));
1556
if (UNIT(service)->load_state != UNIT_LOADED) {
1557
log_error("Socket service %s not loaded, refusing.", UNIT(service)->id);
1561
/* If the service is already active we cannot start the
1563
if (service->state != SERVICE_DEAD &&
1564
service->state != SERVICE_FAILED &&
1565
service->state != SERVICE_AUTO_RESTART) {
1566
log_error("Socket service %s already active, refusing.", UNIT(service)->id);
1570
#ifdef HAVE_SYSV_COMPAT
1571
if (service->sysv_path) {
1572
log_error("Using SysV services for socket activation is not supported. Refusing.");
1578
assert(s->state == SOCKET_DEAD || s->state == SOCKET_FAILED);
1580
s->result = SOCKET_SUCCESS;
1581
socket_enter_start_pre(s);
1585
static int socket_stop(Unit *u) {
1586
Socket *s = SOCKET(u);
1591
if (s->state == SOCKET_STOP_PRE ||
1592
s->state == SOCKET_STOP_PRE_SIGTERM ||
1593
s->state == SOCKET_STOP_PRE_SIGKILL ||
1594
s->state == SOCKET_STOP_POST ||
1595
s->state == SOCKET_FINAL_SIGTERM ||
1596
s->state == SOCKET_FINAL_SIGKILL)
1599
/* If there's already something running we go directly into
1601
if (s->state == SOCKET_START_PRE ||
1602
s->state == SOCKET_START_POST) {
1603
socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, SOCKET_SUCCESS);
1607
assert(s->state == SOCKET_LISTENING || s->state == SOCKET_RUNNING);
1609
socket_enter_stop_pre(s, SOCKET_SUCCESS);
1613
static int socket_serialize(Unit *u, FILE *f, FDSet *fds) {
1614
Socket *s = SOCKET(u);
1622
unit_serialize_item(u, f, "state", socket_state_to_string(s->state));
1623
unit_serialize_item(u, f, "result", socket_result_to_string(s->result));
1624
unit_serialize_item_format(u, f, "n-accepted", "%u", s->n_accepted);
1626
if (s->control_pid > 0)
1627
unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
1629
if (s->control_command_id >= 0)
1630
unit_serialize_item(u, f, "control-command", socket_exec_command_to_string(s->control_command_id));
1632
LIST_FOREACH(port, p, s->ports) {
1638
if ((copy = fdset_put_dup(fds, p->fd)) < 0)
1641
if (p->type == SOCKET_SOCKET) {
1644
if ((r = socket_address_print(&p->address, &t)) < 0)
1647
if (socket_address_family(&p->address) == AF_NETLINK)
1648
unit_serialize_item_format(u, f, "netlink", "%i %s", copy, t);
1650
unit_serialize_item_format(u, f, "socket", "%i %i %s", copy, p->address.type, t);
1652
} else if (p->type == SOCKET_SPECIAL)
1653
unit_serialize_item_format(u, f, "special", "%i %s", copy, p->path);
1655
assert(p->type == SOCKET_FIFO);
1656
unit_serialize_item_format(u, f, "fifo", "%i %s", copy, p->path);
1663
static int socket_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
1664
Socket *s = SOCKET(u);
1671
if (streq(key, "state")) {
1674
if ((state = socket_state_from_string(value)) < 0)
1675
log_debug("Failed to parse state value %s", value);
1677
s->deserialized_state = state;
1678
} else if (streq(key, "result")) {
1681
f = socket_result_from_string(value);
1683
log_debug("Failed to parse result value %s", value);
1684
else if (f != SOCKET_SUCCESS)
1687
} else if (streq(key, "n-accepted")) {
1690
if (safe_atou(value, &k) < 0)
1691
log_debug("Failed to parse n-accepted value %s", value);
1694
} else if (streq(key, "control-pid")) {
1697
if (parse_pid(value, &pid) < 0)
1698
log_debug("Failed to parse control-pid value %s", value);
1700
s->control_pid = pid;
1701
} else if (streq(key, "control-command")) {
1702
SocketExecCommand id;
1704
if ((id = socket_exec_command_from_string(value)) < 0)
1705
log_debug("Failed to parse exec-command value %s", value);
1707
s->control_command_id = id;
1708
s->control_command = s->exec_command[id];
1710
} else if (streq(key, "fifo")) {
1714
if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd))
1715
log_debug("Failed to parse fifo value %s", value);
1718
LIST_FOREACH(port, p, s->ports)
1719
if (p->type == SOCKET_FIFO &&
1720
streq_ptr(p->path, value+skip))
1725
close_nointr_nofail(p->fd);
1726
p->fd = fdset_remove(fds, fd);
1730
} else if (streq(key, "special")) {
1734
if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd))
1735
log_debug("Failed to parse special value %s", value);
1738
LIST_FOREACH(port, p, s->ports)
1739
if (p->type == SOCKET_SPECIAL &&
1740
streq_ptr(p->path, value+skip))
1745
close_nointr_nofail(p->fd);
1746
p->fd = fdset_remove(fds, fd);
1750
} else if (streq(key, "socket")) {
1751
int fd, type, skip = 0;
1754
if (sscanf(value, "%i %i %n", &fd, &type, &skip) < 2 || fd < 0 || type < 0 || !fdset_contains(fds, fd))
1755
log_debug("Failed to parse socket value %s", value);
1758
LIST_FOREACH(port, p, s->ports)
1759
if (socket_address_is(&p->address, value+skip, type))
1764
close_nointr_nofail(p->fd);
1765
p->fd = fdset_remove(fds, fd);
1769
} else if (streq(key, "netlink")) {
1773
if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd))
1774
log_debug("Failed to parse socket value %s", value);
1777
LIST_FOREACH(port, p, s->ports)
1778
if (socket_address_is_netlink(&p->address, value+skip))
1783
close_nointr_nofail(p->fd);
1784
p->fd = fdset_remove(fds, fd);
1789
log_debug("Unknown serialization key '%s'", key);
1794
static UnitActiveState socket_active_state(Unit *u) {
1797
return state_translation_table[SOCKET(u)->state];
1800
static const char *socket_sub_state_to_string(Unit *u) {
1803
return socket_state_to_string(SOCKET(u)->state);
1806
static bool socket_check_gc(Unit *u) {
1807
Socket *s = SOCKET(u);
1811
return s->n_connections > 0;
1814
static void socket_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
1815
Socket *s = SOCKET(u);
1821
if (s->state != SOCKET_LISTENING)
1824
log_debug("Incoming traffic on %s", u->id);
1826
if (events != EPOLLIN) {
1828
if (events & EPOLLHUP)
1829
log_error("%s: Got POLLHUP on a listening socket. The service probably invoked shutdown() on it, and should better not do that.", u->id);
1831
log_error("%s: Got unexpected poll event (0x%x) on socket.", u->id, events);
1836
if (w->socket_accept) {
1839
if ((cfd = accept4(fd, NULL, NULL, SOCK_NONBLOCK)) < 0) {
1844
log_error("Failed to accept socket: %m");
1851
socket_apply_socket_options(s, cfd);
1854
socket_enter_running(s, cfd);
1858
socket_enter_stop_pre(s, SOCKET_FAILURE_RESOURCES);
1861
static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1862
Socket *s = SOCKET(u);
1868
if (pid != s->control_pid)
1873
if (is_clean_exit(code, status))
1875
else if (code == CLD_EXITED)
1876
f = SOCKET_FAILURE_EXIT_CODE;
1877
else if (code == CLD_KILLED)
1878
f = SOCKET_FAILURE_SIGNAL;
1879
else if (code == CLD_DUMPED)
1880
f = SOCKET_FAILURE_CORE_DUMP;
1882
assert_not_reached("Unknown code");
1884
if (s->control_command) {
1885
exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
1887
if (s->control_command->ignore)
1891
log_full(f == SOCKET_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
1892
"%s control process exited, code=%s status=%i", u->id, sigchld_code_to_string(code), status);
1894
if (f != SOCKET_SUCCESS)
1897
if (s->control_command &&
1898
s->control_command->command_next &&
1899
f == SOCKET_SUCCESS) {
1901
log_debug("%s running next command for state %s", u->id, socket_state_to_string(s->state));
1904
s->control_command = NULL;
1905
s->control_command_id = _SOCKET_EXEC_COMMAND_INVALID;
1907
/* No further commands for this step, so let's figure
1908
* out what to do next */
1910
log_debug("%s got final SIGCHLD for state %s", u->id, socket_state_to_string(s->state));
1914
case SOCKET_START_PRE:
1915
if (f == SOCKET_SUCCESS)
1916
socket_enter_start_post(s);
1918
socket_enter_signal(s, SOCKET_FINAL_SIGTERM, f);
1921
case SOCKET_START_POST:
1922
if (f == SOCKET_SUCCESS)
1923
socket_enter_listening(s);
1925
socket_enter_stop_pre(s, f);
1928
case SOCKET_STOP_PRE:
1929
case SOCKET_STOP_PRE_SIGTERM:
1930
case SOCKET_STOP_PRE_SIGKILL:
1931
socket_enter_stop_post(s, f);
1934
case SOCKET_STOP_POST:
1935
case SOCKET_FINAL_SIGTERM:
1936
case SOCKET_FINAL_SIGKILL:
1937
socket_enter_dead(s, f);
1941
assert_not_reached("Uh, control process died at wrong time.");
1945
/* Notify clients about changed exit status */
1946
unit_add_to_dbus_queue(u);
1949
static void socket_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
1950
Socket *s = SOCKET(u);
1953
assert(elapsed == 1);
1954
assert(w == &s->timer_watch);
1958
case SOCKET_START_PRE:
1959
log_warning("%s starting timed out. Terminating.", u->id);
1960
socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_TIMEOUT);
1963
case SOCKET_START_POST:
1964
log_warning("%s starting timed out. Stopping.", u->id);
1965
socket_enter_stop_pre(s, SOCKET_FAILURE_TIMEOUT);
1968
case SOCKET_STOP_PRE:
1969
log_warning("%s stopping timed out. Terminating.", u->id);
1970
socket_enter_signal(s, SOCKET_STOP_PRE_SIGTERM, SOCKET_FAILURE_TIMEOUT);
1973
case SOCKET_STOP_PRE_SIGTERM:
1974
if (s->exec_context.send_sigkill) {
1975
log_warning("%s stopping timed out. Killing.", u->id);
1976
socket_enter_signal(s, SOCKET_STOP_PRE_SIGKILL, SOCKET_FAILURE_TIMEOUT);
1978
log_warning("%s stopping timed out. Skipping SIGKILL. Ignoring.", u->id);
1979
socket_enter_stop_post(s, SOCKET_FAILURE_TIMEOUT);
1983
case SOCKET_STOP_PRE_SIGKILL:
1984
log_warning("%s still around after SIGKILL. Ignoring.", u->id);
1985
socket_enter_stop_post(s, SOCKET_FAILURE_TIMEOUT);
1988
case SOCKET_STOP_POST:
1989
log_warning("%s stopping timed out (2). Terminating.", u->id);
1990
socket_enter_signal(s, SOCKET_FINAL_SIGTERM, SOCKET_FAILURE_TIMEOUT);
1993
case SOCKET_FINAL_SIGTERM:
1994
if (s->exec_context.send_sigkill) {
1995
log_warning("%s stopping timed out (2). Killing.", u->id);
1996
socket_enter_signal(s, SOCKET_FINAL_SIGKILL, SOCKET_FAILURE_TIMEOUT);
1998
log_warning("%s stopping timed out (2). Skipping SIGKILL. Ignoring.", u->id);
1999
socket_enter_dead(s, SOCKET_FAILURE_TIMEOUT);
2003
case SOCKET_FINAL_SIGKILL:
2004
log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->id);
2005
socket_enter_dead(s, SOCKET_FAILURE_TIMEOUT);
2009
assert_not_reached("Timeout at wrong time.");
2013
int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds) {
2022
/* Called from the service code for requesting our fds */
2025
LIST_FOREACH(port, p, s->ports)
2035
if (!(rfds = new(int, rn_fds)))
2039
LIST_FOREACH(port, p, s->ports)
2043
assert(k == rn_fds);
2051
void socket_notify_service_dead(Socket *s, bool failed_permanent) {
2054
/* The service is dead. Dang!
2056
* This is strictly for one-instance-for-all-connections
2059
if (s->state == SOCKET_RUNNING) {
2060
log_debug("%s got notified about service death (failed permanently: %s)", UNIT(s)->id, yes_no(failed_permanent));
2061
if (failed_permanent)
2062
socket_enter_stop_pre(s, SOCKET_FAILURE_SERVICE_FAILED_PERMANENT);
2064
socket_enter_listening(s);
2068
void socket_connection_unref(Socket *s) {
2071
/* The service is dead. Yay!
2073
* This is strictly for one-instance-per-connection
2076
assert(s->n_connections > 0);
2079
log_debug("%s: One connection closed, %u left.", UNIT(s)->id, s->n_connections);
2082
static void socket_reset_failed(Unit *u) {
2083
Socket *s = SOCKET(u);
2087
if (s->state == SOCKET_FAILED)
2088
socket_set_state(s, SOCKET_DEAD);
2090
s->result = SOCKET_SUCCESS;
2093
static int socket_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
2094
Socket *s = SOCKET(u);
2096
Set *pid_set = NULL;
2100
if (who == KILL_MAIN) {
2101
dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "Socket units have no main processes");
2105
if (s->control_pid <= 0 && who == KILL_CONTROL) {
2106
dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
2110
if (who == KILL_CONTROL || who == KILL_ALL)
2111
if (s->control_pid > 0)
2112
if (kill(s->control_pid, signo) < 0)
2115
if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) {
2118
if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
2121
/* Exclude the control pid from being killed via the cgroup */
2122
if (s->control_pid > 0)
2123
if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
2128
if ((q = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, signo, false, pid_set)) < 0)
2129
if (q != -EAGAIN && q != -ESRCH && q != -ENOENT)
2140
static const char* const socket_state_table[_SOCKET_STATE_MAX] = {
2141
[SOCKET_DEAD] = "dead",
2142
[SOCKET_START_PRE] = "start-pre",
2143
[SOCKET_START_POST] = "start-post",
2144
[SOCKET_LISTENING] = "listening",
2145
[SOCKET_RUNNING] = "running",
2146
[SOCKET_STOP_PRE] = "stop-pre",
2147
[SOCKET_STOP_PRE_SIGTERM] = "stop-pre-sigterm",
2148
[SOCKET_STOP_PRE_SIGKILL] = "stop-pre-sigkill",
2149
[SOCKET_STOP_POST] = "stop-post",
2150
[SOCKET_FINAL_SIGTERM] = "final-sigterm",
2151
[SOCKET_FINAL_SIGKILL] = "final-sigkill",
2152
[SOCKET_FAILED] = "failed"
2155
DEFINE_STRING_TABLE_LOOKUP(socket_state, SocketState);
2157
static const char* const socket_exec_command_table[_SOCKET_EXEC_COMMAND_MAX] = {
2158
[SOCKET_EXEC_START_PRE] = "StartPre",
2159
[SOCKET_EXEC_START_POST] = "StartPost",
2160
[SOCKET_EXEC_STOP_PRE] = "StopPre",
2161
[SOCKET_EXEC_STOP_POST] = "StopPost"
2164
DEFINE_STRING_TABLE_LOOKUP(socket_exec_command, SocketExecCommand);
2166
static const char* const socket_result_table[_SOCKET_RESULT_MAX] = {
2167
[SOCKET_SUCCESS] = "success",
2168
[SOCKET_FAILURE_RESOURCES] = "resources",
2169
[SOCKET_FAILURE_TIMEOUT] = "timeout",
2170
[SOCKET_FAILURE_EXIT_CODE] = "exit-code",
2171
[SOCKET_FAILURE_SIGNAL] = "signal",
2172
[SOCKET_FAILURE_CORE_DUMP] = "core-dump",
2173
[SOCKET_FAILURE_SERVICE_FAILED_PERMANENT] = "service-failed-permanent"
2176
DEFINE_STRING_TABLE_LOOKUP(socket_result, SocketResult);
2178
const UnitVTable socket_vtable = {
2179
.suffix = ".socket",
2180
.object_size = sizeof(Socket),
2186
.init = socket_init,
2187
.done = socket_done,
2188
.load = socket_load,
2190
.kill = socket_kill,
2192
.coldplug = socket_coldplug,
2194
.dump = socket_dump,
2196
.start = socket_start,
2197
.stop = socket_stop,
2199
.serialize = socket_serialize,
2200
.deserialize_item = socket_deserialize_item,
2202
.active_state = socket_active_state,
2203
.sub_state_to_string = socket_sub_state_to_string,
2205
.check_gc = socket_check_gc,
2207
.fd_event = socket_fd_event,
2208
.sigchld_event = socket_sigchld_event,
2209
.timer_event = socket_timer_event,
2211
.reset_failed = socket_reset_failed,
2213
.bus_interface = "org.freedesktop.systemd1.Socket",
2214
.bus_message_handler = bus_socket_message_handler,
2215
.bus_invalidating_properties = bus_socket_invalidating_properties
added
removed
src/socket.c
