1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
4 typedef struct Socket Socket
;
5 typedef struct SocketPeer SocketPeer
;
8 #include "socket-util.h"
11 typedef enum SocketExecCommand
{
12 SOCKET_EXEC_START_PRE
,
13 SOCKET_EXEC_START_CHOWN
,
14 SOCKET_EXEC_START_POST
,
16 SOCKET_EXEC_STOP_POST
,
17 _SOCKET_EXEC_COMMAND_MAX
,
18 _SOCKET_EXEC_COMMAND_INVALID
= -EINVAL
,
21 typedef enum SocketType
{
28 _SOCKET_TYPE_INVALID
= -EINVAL
,
31 typedef enum SocketResult
{
33 SOCKET_FAILURE_RESOURCES
,
34 SOCKET_FAILURE_TIMEOUT
,
35 SOCKET_FAILURE_EXIT_CODE
,
36 SOCKET_FAILURE_SIGNAL
,
37 SOCKET_FAILURE_CORE_DUMP
,
38 SOCKET_FAILURE_START_LIMIT_HIT
,
39 SOCKET_FAILURE_TRIGGER_LIMIT_HIT
,
40 SOCKET_FAILURE_SERVICE_START_LIMIT_HIT
,
42 _SOCKET_RESULT_INVALID
= -EINVAL
,
45 typedef struct SocketPort
{
51 size_t n_auxiliary_fds
;
53 SocketAddress address
;
55 sd_event_source
*event_source
;
57 LIST_FIELDS(struct SocketPort
, port
);
60 typedef enum SocketTimestamping
{
61 SOCKET_TIMESTAMPING_OFF
,
62 SOCKET_TIMESTAMPING_US
, /* SO_TIMESTAMP */
63 SOCKET_TIMESTAMPING_NS
, /* SO_TIMESTAMPNS */
64 _SOCKET_TIMESTAMPING_MAX
,
65 _SOCKET_TIMESTAMPING_INVALID
= -EINVAL
,
71 LIST_HEAD(SocketPort
, ports
);
73 Set
*peers_by_address
;
76 unsigned n_connections
;
78 unsigned max_connections
;
79 unsigned max_connections_per_source
;
82 unsigned keep_alive_cnt
;
84 usec_t keep_alive_time
;
85 usec_t keep_alive_interval
;
88 ExecCommand
* exec_command
[_SOCKET_EXEC_COMMAND_MAX
];
89 ExecContext exec_context
;
90 KillContext kill_context
;
91 CGroupContext cgroup_context
;
93 ExecRuntime
*exec_runtime
;
94 DynamicCreds dynamic_creds
;
96 /* For Accept=no sockets refers to the one service we'll
97 * activate. For Accept=yes sockets is either NULL, or filled
98 * to refer to the next service we spawn. */
101 SocketState state
, deserialized_state
;
103 sd_event_source
*timer_event_source
;
105 ExecCommand
* control_command
;
106 SocketExecCommand control_command_id
;
109 mode_t directory_mode
;
113 SocketResult clean_result
;
133 SocketTimestamping timestamping
;
135 /* Only for INET6 sockets: issue IPV6_V6ONLY sockopt */
136 SocketAddressBindIPv6Only bind_ipv6_only
;
140 size_t receive_buffer
;
145 char *bind_to_device
;
146 char *tcp_congestion
;
155 bool selinux_context_from_net
;
161 RateLimit trigger_limit
;
164 SocketPeer
*socket_peer_ref(SocketPeer
*p
);
165 SocketPeer
*socket_peer_unref(SocketPeer
*p
);
166 int socket_acquire_peer(Socket
*s
, int fd
, SocketPeer
**p
);
168 DEFINE_TRIVIAL_CLEANUP_FUNC(SocketPeer
*, socket_peer_unref
);
170 /* Called from the service code when collecting fds */
171 int socket_collect_fds(Socket
*s
, int **fds
);
173 /* Called from the service code when a per-connection service ended */
174 void socket_connection_unref(Socket
*s
);
176 void socket_free_ports(Socket
*s
);
178 int socket_load_service_unit(Socket
*s
, int cfd
, Unit
**ret
);
180 char *socket_fdname(Socket
*s
);
182 extern const UnitVTable socket_vtable
;
184 const char* socket_exec_command_to_string(SocketExecCommand i
) _const_
;
185 SocketExecCommand
socket_exec_command_from_string(const char *s
) _pure_
;
187 const char* socket_result_to_string(SocketResult i
) _const_
;
188 SocketResult
socket_result_from_string(const char *s
) _pure_
;
190 const char* socket_port_type_to_string(SocketPort
*p
) _pure_
;
191 SocketType
socket_port_type_from_string(const char *p
) _pure_
;
193 const char* socket_timestamping_to_string(SocketTimestamping p
) _const_
;
194 SocketTimestamping
socket_timestamping_from_string(const char *p
) _pure_
;
195 SocketTimestamping
socket_timestamping_from_string_harder(const char *p
) _pure_
;
197 DEFINE_CAST(SOCKET
, Socket
);