summaryrefslogtreecommitdiff
path: root/src/socket.h
blob: 43d28d7e04d3a207873c41ece3c33977e410deaf (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
/*-*- Mode: C; c-basic-offset: 8 -*-*/

#ifndef foosockethfoo
#define foosockethfoo

/***
  This file is part of systemd.

  Copyright 2010 Lennart Poettering

  systemd is free software; you can redistribute it and/or modify it
  under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  systemd is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/

typedef struct Socket Socket;

#include "manager.h"
#include "unit.h"
#include "socket-util.h"
#include "mount.h"

typedef enum SocketState {
        SOCKET_DEAD,
        SOCKET_START_PRE,
        SOCKET_START_POST,
        SOCKET_LISTENING,
        SOCKET_RUNNING,
        SOCKET_STOP_PRE,
        SOCKET_STOP_PRE_SIGTERM,
        SOCKET_STOP_PRE_SIGKILL,
        SOCKET_STOP_POST,
        SOCKET_FINAL_SIGTERM,
        SOCKET_FINAL_SIGKILL,
        SOCKET_MAINTAINANCE,
        _SOCKET_STATE_MAX,
        _SOCKET_STATE_INVALID = -1
} SocketState;

typedef enum SocketExecCommand {
        SOCKET_EXEC_START_PRE,
        SOCKET_EXEC_START_POST,
        SOCKET_EXEC_STOP_PRE,
        SOCKET_EXEC_STOP_POST,
        _SOCKET_EXEC_COMMAND_MAX,
        _SOCKET_EXEC_COMMAND_INVALID = -1
} SocketExecCommand;

typedef enum SocketType {
        SOCKET_SOCKET,
        SOCKET_FIFO,
        _SOCKET_FIFO_MAX,
        _SOCKET_FIFO_INVALID = -1
} SocketType;

typedef struct SocketPort SocketPort;

struct SocketPort {
        SocketType type;
        int fd;

        SocketAddress address;
        char *path;

        Watch fd_watch;

        LIST_FIELDS(SocketPort, port);
};

struct Socket {
        Meta meta;

        LIST_HEAD(SocketPort, ports);

        /* Only for INET6 sockets: issue IPV6_V6ONLY sockopt */
        bool bind_ipv6_only;
        unsigned backlog;

        usec_t timeout_usec;

        ExecCommand* exec_command[_SOCKET_EXEC_COMMAND_MAX];
        ExecContext exec_context;

        Service *service;

        SocketState state, deserialized_state;

        KillMode kill_mode;

        ExecCommand* control_command;
        SocketExecCommand control_command_id;
        pid_t control_pid;

        char *bind_to_device;
        mode_t directory_mode;
        mode_t socket_mode;

        bool accept;
        unsigned n_accepted;

        bool failure;
        Watch timer_watch;
};

/* Called from the service code when collecting fds */
int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds);

/* Called from the service when it shut down */
void socket_notify_service_dead(Socket *s);

/* Called from the mount code figure out if a mount is a dependency of
 * any of the sockets of this socket */
int socket_add_one_mount_link(Socket *s, Mount *m);

extern const UnitVTable socket_vtable;

const char* socket_state_to_string(SocketState i);
SocketState socket_state_from_string(const char *s);

const char* socket_exec_command_to_string(SocketExecCommand i);
SocketExecCommand socket_exec_command_from_string(const char *s);

#endif