1 /* SPDX-License-Identifier: LGPL-2.1+ */
5 Copyright 2010 Lennart Poettering
8 typedef struct Socket Socket
;
9 typedef struct SocketPeer SocketPeer
;
13 #include "socket-util.h"
16 typedef enum SocketExecCommand
{
17 SOCKET_EXEC_START_PRE
,
18 SOCKET_EXEC_START_CHOWN
,
19 SOCKET_EXEC_START_POST
,
21 SOCKET_EXEC_STOP_POST
,
22 _SOCKET_EXEC_COMMAND_MAX
,
23 _SOCKET_EXEC_COMMAND_INVALID
= -1
26 typedef enum SocketType
{
33 _SOCKET_TYPE_INVALID
= -1
36 typedef enum SocketResult
{
38 SOCKET_FAILURE_RESOURCES
,
39 SOCKET_FAILURE_TIMEOUT
,
40 SOCKET_FAILURE_EXIT_CODE
,
41 SOCKET_FAILURE_SIGNAL
,
42 SOCKET_FAILURE_CORE_DUMP
,
43 SOCKET_FAILURE_START_LIMIT_HIT
,
44 SOCKET_FAILURE_TRIGGER_LIMIT_HIT
,
45 SOCKET_FAILURE_SERVICE_START_LIMIT_HIT
,
47 _SOCKET_RESULT_INVALID
= -1
50 typedef struct SocketPort
{
56 size_t n_auxiliary_fds
;
58 SocketAddress address
;
60 sd_event_source
*event_source
;
62 LIST_FIELDS(struct SocketPort
, port
);
68 LIST_HEAD(SocketPort
, ports
);
70 Set
*peers_by_address
;
73 unsigned n_connections
;
75 unsigned max_connections
;
76 unsigned max_connections_per_source
;
79 unsigned keep_alive_cnt
;
81 usec_t keep_alive_time
;
82 usec_t keep_alive_interval
;
85 ExecCommand
* exec_command
[_SOCKET_EXEC_COMMAND_MAX
];
86 ExecContext exec_context
;
87 KillContext kill_context
;
88 CGroupContext cgroup_context
;
90 ExecRuntime
*exec_runtime
;
91 DynamicCreds dynamic_creds
;
93 /* For Accept=no sockets refers to the one service we'll
94 * activate. For Accept=yes sockets is either NULL, or filled
95 * to refer to the next service we spawn. */
98 SocketState state
, deserialized_state
;
100 sd_event_source
*timer_event_source
;
102 ExecCommand
* control_command
;
103 SocketExecCommand control_command_id
;
106 mode_t directory_mode
;
128 /* Only for INET6 sockets: issue IPV6_V6ONLY sockopt */
129 SocketAddressBindIPv6Only bind_ipv6_only
;
133 size_t receive_buffer
;
138 char *bind_to_device
;
139 char *tcp_congestion
;
148 bool selinux_context_from_net
;
154 RateLimit trigger_limit
;
157 SocketPeer
*socket_peer_ref(SocketPeer
*p
);
158 SocketPeer
*socket_peer_unref(SocketPeer
*p
);
159 int socket_acquire_peer(Socket
*s
, int fd
, SocketPeer
**p
);
161 DEFINE_TRIVIAL_CLEANUP_FUNC(SocketPeer
*, socket_peer_unref
);
163 /* Called from the service code when collecting fds */
164 int socket_collect_fds(Socket
*s
, int **fds
);
166 /* Called from the service code when a per-connection service ended */
167 void socket_connection_unref(Socket
*s
);
169 void socket_free_ports(Socket
*s
);
171 int socket_instantiate_service(Socket
*s
);
173 char *socket_fdname(Socket
*s
);
175 extern const UnitVTable socket_vtable
;
177 const char* socket_exec_command_to_string(SocketExecCommand i
) _const_
;
178 SocketExecCommand
socket_exec_command_from_string(const char *s
) _pure_
;
180 const char* socket_result_to_string(SocketResult i
) _const_
;
181 SocketResult
socket_result_from_string(const char *s
) _pure_
;
183 const char* socket_port_type_to_string(SocketPort
*p
) _pure_
;
184 SocketType
socket_port_type_from_string(const char *p
) _pure_
;
186 DEFINE_CAST(SOCKET
, Socket
);