socket.h

   1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
   2
   3 #ifndef foosockethfoo
   4 #define foosockethfoo
   5
   6 /***
   7   This file is part of systemd.
   8
   9   Copyright 2010 Lennart Poettering
  10
  11   systemd is free software; you can redistribute it and/or modify it
  12   under the terms of the GNU General Public License as published by
  13   the Free Software Foundation; either version 2 of the License, or
  14   (at your option) any later version.
  15
  16   systemd is distributed in the hope that it will be useful, but
  17   WITHOUT ANY WARRANTY; without even the implied warranty of
  18   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19   General Public License for more details.
  20
  21   You should have received a copy of the GNU General Public License
  22   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  23 ***/
  24
  25 typedef struct Socket Socket;
  26
  27 #include "manager.h"
  28 #include "unit.h"
  29 #include "socket-util.h"
  30
  31 typedef enum SocketState {
  32         SOCKET_DEAD,
  33         SOCKET_START_PRE,
  34         SOCKET_START_POST,
  35         SOCKET_LISTENING,
  36         SOCKET_RUNNING,
  37         SOCKET_STOP_PRE,
  38         SOCKET_STOP_PRE_SIGTERM,
  39         SOCKET_STOP_PRE_SIGKILL,
  40         SOCKET_STOP_POST,
  41         SOCKET_STOP_POST_SIGTERM,
  42         SOCKET_STOP_POST_SIGKILL,
  43         SOCKET_MAINTAINANCE,
  44         _SOCKET_STATE_MAX
  45 } SocketState;
  46
  47 typedef enum SocketExecCommand {
  48         SOCKET_EXEC_START_PRE,
  49         SOCKET_EXEC_START_POST,
  50         SOCKET_EXEC_STOP_PRE,
  51         SOCKET_EXEC_STOP_POST,
  52         _SOCKET_EXEC_MAX
  53 } SocketExecCommand;
  54
  55 typedef enum SocketType {
  56         SOCKET_SOCKET,
  57         SOCKET_FIFO
  58 } SocketType;
  59
  60 typedef struct SocketPort SocketPort;
  61
  62 struct SocketPort {
  63         SocketType type;
  64
  65         SocketAddress address;
  66         char *path;
  67
  68         int fd;
  69         Watch fd_watch;
  70
  71         LIST_FIELDS(SocketPort, port);
  72 };
  73
  74 struct Socket {
  75         Meta meta;
  76
  77         LIST_HEAD(SocketPort, ports);
  78
  79         /* Only for INET6 sockets: issue IPV6_V6ONLY sockopt */
  80         bool bind_ipv6_only;
  81         unsigned backlog;
  82
  83         usec_t timeout_usec;
  84
  85         ExecCommand* exec_command[_SOCKET_EXEC_MAX];
  86         ExecContext exec_context;
  87
  88         Service *service;
  89
  90         SocketState state;
  91
  92         KillMode kill_mode;
  93
  94         ExecCommand* control_command;
  95         pid_t control_pid;
  96
  97         char *bind_to_device;
  98         mode_t directory_mode;
  99         mode_t socket_mode;
 100
 101         bool failure;
 102         Watch timer_watch;
 103 };
 104
 105 /* Called from the service code when collecting fds */
 106 int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds);
 107
 108 /* Called from the service when it shut down */
 109 void socket_notify_service_dead(Socket *s);
 110
 111 extern const UnitVTable socket_vtable;
 112
 113 #endif