/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ #pragma once /*** 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 Lesser General Public License as published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser 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" #include "service.h" typedef enum SocketState { SOCKET_DEAD, SOCKET_START_PRE, SOCKET_START_CHOWN, 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_FAILED, _SOCKET_STATE_MAX, _SOCKET_STATE_INVALID = -1 } SocketState; typedef enum SocketExecCommand { SOCKET_EXEC_START_PRE, SOCKET_EXEC_START_CHOWN, 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_SPECIAL, SOCKET_MQUEUE, _SOCKET_FIFO_MAX, _SOCKET_FIFO_INVALID = -1 } SocketType; typedef enum SocketResult { SOCKET_SUCCESS, SOCKET_FAILURE_RESOURCES, SOCKET_FAILURE_TIMEOUT, SOCKET_FAILURE_EXIT_CODE, SOCKET_FAILURE_SIGNAL, SOCKET_FAILURE_CORE_DUMP, SOCKET_FAILURE_SERVICE_FAILED_PERMANENT, _SOCKET_RESULT_MAX, _SOCKET_RESULT_INVALID = -1 } SocketResult; typedef struct SocketPort { Socket *socket; SocketType type; int fd; SocketAddress address; char *path; sd_event_source *event_source; LIST_FIELDS(struct SocketPort, port); } SocketPort; struct Socket { Unit meta; LIST_HEAD(SocketPort, ports); unsigned n_accepted; unsigned n_connections; unsigned max_connections; unsigned backlog; unsigned keep_alive_cnt; usec_t timeout_usec; usec_t keep_alive_time; usec_t keep_alive_interval; usec_t defer_accept; ExecCommand* exec_command[_SOCKET_EXEC_COMMAND_MAX]; ExecContext exec_context; KillContext kill_context; CGroupContext cgroup_context; ExecRuntime *exec_runtime; /* For Accept=no sockets refers to the one service we'll activate. For Accept=yes sockets is either NULL, or filled when the next service we spawn. */ UnitRef service; SocketState state, deserialized_state; sd_event_source *timer_event_source; ExecCommand* control_command; SocketExecCommand control_command_id; pid_t control_pid; mode_t directory_mode; mode_t socket_mode; SocketResult result; char **symlinks; bool accept; bool remove_on_stop; /* Socket options */ bool keep_alive; bool no_delay; bool free_bind; bool transparent; bool broadcast; bool pass_cred; bool pass_sec; /* Only for INET6 sockets: issue IPV6_V6ONLY sockopt */ SocketAddressBindIPv6Only bind_ipv6_only; int priority; int mark; size_t receive_buffer; size_t send_buffer; int ip_tos; int ip_ttl; size_t pipe_size; char *bind_to_device; char *tcp_congestion; bool reuse_port; long mq_maxmsg; long mq_msgsize; char *smack; char *smack_ip_in; char *smack_ip_out; bool selinux_context_from_net; char *user, *group; }; /* Called from the service code when collecting fds */ int socket_collect_fds(Socket *s, int **fds, unsigned *n_fds); /* Called from the service code when a per-connection service ended */ void socket_connection_unref(Socket *s); void socket_free_ports(Socket *s); extern const UnitVTable socket_vtable; const char* socket_state_to_string(SocketState i) _const_; SocketState socket_state_from_string(const char *s) _pure_; const char* socket_exec_command_to_string(SocketExecCommand i) _const_; SocketExecCommand socket_exec_command_from_string(const char *s) _pure_; const char* socket_result_to_string(SocketResult i) _const_; SocketResult socket_result_from_string(const char *s) _pure_; const char* socket_port_type_to_string(SocketPort *p) _pure_; int socket_instantiate_service(Socket *s);