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;
104 KillContext kill_context;
106 /* For Accept=no sockets refers to the one service we'll
107 activate. For Accept=yes sockets is either NULL, or filled
108 when the next service we spawn. */
111 SocketState state, deserialized_state;
115 ExecCommand* control_command;
116 SocketExecCommand control_command_id;
119 mode_t directory_mode;
135 size_t receive_buffer;
140 char *bind_to_device;
141 char *tcp_congestion;
145 /* Only for INET6 sockets: issue IPV6_V6ONLY sockopt */
146 SocketAddressBindIPv6Only bind_ipv6_only;
153 /* Called from the service code when collecting fds */
154 int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds);
156 /* Called from the service when it shut down */
157 void socket_notify_service_dead(Socket *s, bool failed_permanent);
159 /* Called from the mount code figure out if a mount is a dependency of
160 * any of the sockets of this socket */
161 int socket_add_one_mount_link(Socket *s, Mount *m);
163 /* Called from the service code when a per-connection service ended */
164 void socket_connection_unref(Socket *s);
166 void socket_free_ports(Socket *s);
168 extern const UnitVTable socket_vtable;
170 const char* socket_state_to_string(SocketState i);
171 SocketState socket_state_from_string(const char *s);
173 const char* socket_exec_command_to_string(SocketExecCommand i);
174 SocketExecCommand socket_exec_command_from_string(const char *s);
176 const char* socket_result_to_string(SocketResult i);
177 SocketResult socket_result_from_string(const char *s);