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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | #pragma once | |
4 | ||
5 | /*** | |
6 | This file is part of systemd. | |
7 | ||
8 | Copyright 2010 Lennart Poettering | |
9 | ||
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. | |
14 | ||
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. | |
19 | ||
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/>. | |
22 | ***/ | |
23 | ||
24 | typedef struct Socket Socket; | |
25 | ||
26 | #include "manager.h" | |
27 | #include "unit.h" | |
28 | #include "socket-util.h" | |
29 | #include "mount.h" | |
30 | #include "service.h" | |
31 | ||
32 | typedef enum SocketState { | |
33 | SOCKET_DEAD, | |
34 | SOCKET_START_PRE, | |
60f067b4 | 35 | SOCKET_START_CHOWN, |
663996b3 MS |
36 | SOCKET_START_POST, |
37 | SOCKET_LISTENING, | |
38 | SOCKET_RUNNING, | |
39 | SOCKET_STOP_PRE, | |
40 | SOCKET_STOP_PRE_SIGTERM, | |
41 | SOCKET_STOP_PRE_SIGKILL, | |
42 | SOCKET_STOP_POST, | |
43 | SOCKET_FINAL_SIGTERM, | |
44 | SOCKET_FINAL_SIGKILL, | |
45 | SOCKET_FAILED, | |
46 | _SOCKET_STATE_MAX, | |
47 | _SOCKET_STATE_INVALID = -1 | |
48 | } SocketState; | |
49 | ||
50 | typedef enum SocketExecCommand { | |
51 | SOCKET_EXEC_START_PRE, | |
60f067b4 | 52 | SOCKET_EXEC_START_CHOWN, |
663996b3 MS |
53 | SOCKET_EXEC_START_POST, |
54 | SOCKET_EXEC_STOP_PRE, | |
55 | SOCKET_EXEC_STOP_POST, | |
56 | _SOCKET_EXEC_COMMAND_MAX, | |
57 | _SOCKET_EXEC_COMMAND_INVALID = -1 | |
58 | } SocketExecCommand; | |
59 | ||
60 | typedef enum SocketType { | |
61 | SOCKET_SOCKET, | |
62 | SOCKET_FIFO, | |
63 | SOCKET_SPECIAL, | |
64 | SOCKET_MQUEUE, | |
65 | _SOCKET_FIFO_MAX, | |
66 | _SOCKET_FIFO_INVALID = -1 | |
67 | } SocketType; | |
68 | ||
69 | typedef enum SocketResult { | |
70 | SOCKET_SUCCESS, | |
71 | SOCKET_FAILURE_RESOURCES, | |
72 | SOCKET_FAILURE_TIMEOUT, | |
73 | SOCKET_FAILURE_EXIT_CODE, | |
74 | SOCKET_FAILURE_SIGNAL, | |
75 | SOCKET_FAILURE_CORE_DUMP, | |
76 | SOCKET_FAILURE_SERVICE_FAILED_PERMANENT, | |
77 | _SOCKET_RESULT_MAX, | |
78 | _SOCKET_RESULT_INVALID = -1 | |
79 | } SocketResult; | |
80 | ||
81 | typedef struct SocketPort { | |
60f067b4 JS |
82 | Socket *socket; |
83 | ||
663996b3 MS |
84 | SocketType type; |
85 | int fd; | |
86 | ||
87 | SocketAddress address; | |
88 | char *path; | |
60f067b4 | 89 | sd_event_source *event_source; |
663996b3 MS |
90 | |
91 | LIST_FIELDS(struct SocketPort, port); | |
92 | } SocketPort; | |
93 | ||
94 | struct Socket { | |
95 | Unit meta; | |
96 | ||
97 | LIST_HEAD(SocketPort, ports); | |
98 | ||
99 | unsigned n_accepted; | |
100 | unsigned n_connections; | |
101 | unsigned max_connections; | |
102 | ||
103 | unsigned backlog; | |
5eef597e | 104 | unsigned keep_alive_cnt; |
663996b3 | 105 | usec_t timeout_usec; |
5eef597e MP |
106 | usec_t keep_alive_time; |
107 | usec_t keep_alive_interval; | |
108 | usec_t defer_accept; | |
663996b3 MS |
109 | |
110 | ExecCommand* exec_command[_SOCKET_EXEC_COMMAND_MAX]; | |
111 | ExecContext exec_context; | |
112 | KillContext kill_context; | |
14228c0d | 113 | CGroupContext cgroup_context; |
60f067b4 | 114 | ExecRuntime *exec_runtime; |
663996b3 MS |
115 | |
116 | /* For Accept=no sockets refers to the one service we'll | |
117 | activate. For Accept=yes sockets is either NULL, or filled | |
118 | when the next service we spawn. */ | |
119 | UnitRef service; | |
120 | ||
121 | SocketState state, deserialized_state; | |
122 | ||
60f067b4 | 123 | sd_event_source *timer_event_source; |
663996b3 MS |
124 | |
125 | ExecCommand* control_command; | |
126 | SocketExecCommand control_command_id; | |
127 | pid_t control_pid; | |
128 | ||
129 | mode_t directory_mode; | |
130 | mode_t socket_mode; | |
131 | ||
132 | SocketResult result; | |
133 | ||
60f067b4 JS |
134 | char **symlinks; |
135 | ||
663996b3 | 136 | bool accept; |
60f067b4 | 137 | bool remove_on_stop; |
663996b3 MS |
138 | |
139 | /* Socket options */ | |
140 | bool keep_alive; | |
5eef597e | 141 | bool no_delay; |
663996b3 MS |
142 | bool free_bind; |
143 | bool transparent; | |
144 | bool broadcast; | |
145 | bool pass_cred; | |
146 | bool pass_sec; | |
147 | ||
148 | /* Only for INET6 sockets: issue IPV6_V6ONLY sockopt */ | |
149 | SocketAddressBindIPv6Only bind_ipv6_only; | |
150 | ||
151 | int priority; | |
152 | int mark; | |
153 | size_t receive_buffer; | |
154 | size_t send_buffer; | |
155 | int ip_tos; | |
156 | int ip_ttl; | |
157 | size_t pipe_size; | |
158 | char *bind_to_device; | |
159 | char *tcp_congestion; | |
60f067b4 | 160 | bool reuse_port; |
663996b3 MS |
161 | long mq_maxmsg; |
162 | long mq_msgsize; | |
163 | ||
164 | char *smack; | |
165 | char *smack_ip_in; | |
166 | char *smack_ip_out; | |
60f067b4 | 167 | |
5eef597e MP |
168 | bool selinux_context_from_net; |
169 | ||
60f067b4 | 170 | char *user, *group; |
663996b3 MS |
171 | }; |
172 | ||
173 | /* Called from the service code when collecting fds */ | |
174 | int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds); | |
175 | ||
663996b3 MS |
176 | /* Called from the service code when a per-connection service ended */ |
177 | void socket_connection_unref(Socket *s); | |
178 | ||
179 | void socket_free_ports(Socket *s); | |
180 | ||
181 | extern const UnitVTable socket_vtable; | |
182 | ||
183 | const char* socket_state_to_string(SocketState i) _const_; | |
184 | SocketState socket_state_from_string(const char *s) _pure_; | |
185 | ||
186 | const char* socket_exec_command_to_string(SocketExecCommand i) _const_; | |
187 | SocketExecCommand socket_exec_command_from_string(const char *s) _pure_; | |
188 | ||
189 | const char* socket_result_to_string(SocketResult i) _const_; | |
190 | SocketResult socket_result_from_string(const char *s) _pure_; | |
191 | ||
192 | const char* socket_port_type_to_string(SocketPort *p) _pure_; | |
5eef597e MP |
193 | |
194 | int socket_instantiate_service(Socket *s); |