summaryrefslogtreecommitdiff
path: root/src/core/socket.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/core/socket.h')
-rw-r--r--src/core/socket.h175
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);