1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
6 This file is part of systemd.
8 Copyright 2010 Lennart Poettering
10 systemd is free software; you can redistribute it and/or modify it
11 under the terms of the GNU Lesser General Public License as published by
12 the Free Software Foundation; either version 2.1 of the License, or
13 (at your option) any later version.
15 systemd is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Lesser General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public License
21 along with systemd; If not, see <http://www.gnu.org/licenses/>.
24 typedef struct Socket Socket;
28 #include "socket-util.h"
32 typedef enum SocketState {
39 SOCKET_STOP_PRE_SIGTERM,
40 SOCKET_STOP_PRE_SIGKILL,
46 _SOCKET_STATE_INVALID = -1
49 typedef enum SocketExecCommand {
50 SOCKET_EXEC_START_PRE,
51 SOCKET_EXEC_START_POST,
53 SOCKET_EXEC_STOP_POST,
54 _SOCKET_EXEC_COMMAND_MAX,
55 _SOCKET_EXEC_COMMAND_INVALID = -1
58 typedef enum SocketType {
64 _SOCKET_FIFO_INVALID = -1
67 typedef enum SocketResult {
69 SOCKET_FAILURE_RESOURCES,
70 SOCKET_FAILURE_TIMEOUT,
71 SOCKET_FAILURE_EXIT_CODE,
72 SOCKET_FAILURE_SIGNAL,
73 SOCKET_FAILURE_CORE_DUMP,
74 SOCKET_FAILURE_SERVICE_FAILED_PERMANENT,
76 _SOCKET_RESULT_INVALID = -1
79 typedef struct SocketPort {
83 SocketAddress address;
87 LIST_FIELDS(struct SocketPort, port);
93 LIST_HEAD(SocketPort, ports);
96 unsigned n_connections;
97 unsigned max_connections;
102 ExecCommand* exec_command[_SOCKET_EXEC_COMMAND_MAX];
103 ExecContext exec_context;
105 /* For Accept=no sockets refers to the one service we'll
106 activate. For Accept=yes sockets is either NULL, or filled
107 when the next service we spawn. */
110 SocketState state, deserialized_state;
114 ExecCommand* control_command;
115 SocketExecCommand control_command_id;
118 mode_t directory_mode;
134 size_t receive_buffer;
139 char *bind_to_device;
140 char *tcp_congestion;
144 /* Only for INET6 sockets: issue IPV6_V6ONLY sockopt */
145 SocketAddressBindIPv6Only bind_ipv6_only;
148 /* Called from the service code when collecting fds */
149 int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds);
151 /* Called from the service when it shut down */
152 void socket_notify_service_dead(Socket *s, bool failed_permanent);
154 /* Called from the mount code figure out if a mount is a dependency of
155 * any of the sockets of this socket */
156 int socket_add_one_mount_link(Socket *s, Mount *m);
158 /* Called from the service code when a per-connection service ended */
159 void socket_connection_unref(Socket *s);
161 extern const UnitVTable socket_vtable;
163 const char* socket_state_to_string(SocketState i);
164 SocketState socket_state_from_string(const char *s);
166 const char* socket_exec_command_to_string(SocketExecCommand i);
167 SocketExecCommand socket_exec_command_from_string(const char *s);
169 const char* socket_result_to_string(SocketResult i);
170 SocketResult socket_result_from_string(const char *s);