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Diffstat (limited to 'src/core/socket.h')
| -rw-r--r-- | src/core/socket.h | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/src/core/socket.h b/src/core/socket.h new file mode 100644 index 0000000000..f099520dce --- /dev/null +++ b/src/core/socket.h @@ -0,0 +1,175 @@ +/*-*- 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_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_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 { + SocketType type; + int fd; + + SocketAddress address; + char *path; + Watch fd_watch; + + 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; + usec_t timeout_usec; + + ExecCommand* exec_command[_SOCKET_EXEC_COMMAND_MAX]; + ExecContext exec_context; + KillContext kill_context; + + /* 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; + + Watch timer_watch; + + ExecCommand* control_command; + SocketExecCommand control_command_id; + pid_t control_pid; + + mode_t directory_mode; + mode_t socket_mode; + + SocketResult result; + + bool accept; + + /* Socket options */ + bool keep_alive; + bool free_bind; + bool transparent; + bool broadcast; + bool pass_cred; + bool pass_sec; + 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; + long mq_maxmsg; + long mq_msgsize; + + /* Only for INET6 sockets: issue IPV6_V6ONLY sockopt */ + SocketAddressBindIPv6Only bind_ipv6_only; + + char *smack; + char *smack_ip_in; + char *smack_ip_out; +}; + +/* 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, bool failed_permanent); + +/* 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); + +/* Called from the service code when a per-connection service ended */ +void socket_connection_unref(Socket *s); + +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); + +const char* socket_result_to_string(SocketResult i); +SocketResult socket_result_from_string(const char *s); |