184 lines
4.5 KiB
C
184 lines
4.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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typedef struct Socket Socket;
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typedef struct SocketPeer SocketPeer;
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#include "mount.h"
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#include "service.h"
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#include "socket-util.h"
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#include "unit.h"
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typedef enum SocketExecCommand {
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SOCKET_EXEC_START_PRE,
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SOCKET_EXEC_START_CHOWN,
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SOCKET_EXEC_START_POST,
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SOCKET_EXEC_STOP_PRE,
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SOCKET_EXEC_STOP_POST,
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_SOCKET_EXEC_COMMAND_MAX,
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_SOCKET_EXEC_COMMAND_INVALID = -1
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} SocketExecCommand;
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typedef enum SocketType {
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SOCKET_SOCKET,
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SOCKET_FIFO,
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SOCKET_SPECIAL,
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SOCKET_MQUEUE,
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SOCKET_USB_FUNCTION,
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_SOCKET_TYPE_MAX,
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_SOCKET_TYPE_INVALID = -1
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} SocketType;
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typedef enum SocketResult {
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SOCKET_SUCCESS,
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SOCKET_FAILURE_RESOURCES,
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SOCKET_FAILURE_TIMEOUT,
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SOCKET_FAILURE_EXIT_CODE,
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SOCKET_FAILURE_SIGNAL,
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SOCKET_FAILURE_CORE_DUMP,
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SOCKET_FAILURE_START_LIMIT_HIT,
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SOCKET_FAILURE_TRIGGER_LIMIT_HIT,
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SOCKET_FAILURE_SERVICE_START_LIMIT_HIT,
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_SOCKET_RESULT_MAX,
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_SOCKET_RESULT_INVALID = -1
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} SocketResult;
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typedef struct SocketPort {
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Socket *socket;
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SocketType type;
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int fd;
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int *auxiliary_fds;
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size_t n_auxiliary_fds;
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SocketAddress address;
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char *path;
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sd_event_source *event_source;
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LIST_FIELDS(struct SocketPort, port);
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} SocketPort;
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struct Socket {
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Unit meta;
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LIST_HEAD(SocketPort, ports);
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Set *peers_by_address;
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unsigned n_accepted;
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unsigned n_connections;
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unsigned n_refused;
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unsigned max_connections;
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unsigned max_connections_per_source;
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unsigned backlog;
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unsigned keep_alive_cnt;
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usec_t timeout_usec;
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usec_t keep_alive_time;
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usec_t keep_alive_interval;
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usec_t defer_accept;
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ExecCommand* exec_command[_SOCKET_EXEC_COMMAND_MAX];
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ExecContext exec_context;
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KillContext kill_context;
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CGroupContext cgroup_context;
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ExecRuntime *exec_runtime;
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DynamicCreds dynamic_creds;
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/* For Accept=no sockets refers to the one service we'll
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* activate. For Accept=yes sockets is either NULL, or filled
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* to refer to the next service we spawn. */
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UnitRef service;
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SocketState state, deserialized_state;
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sd_event_source *timer_event_source;
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ExecCommand* control_command;
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SocketExecCommand control_command_id;
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pid_t control_pid;
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mode_t directory_mode;
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mode_t socket_mode;
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SocketResult result;
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SocketResult clean_result;
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char **symlinks;
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bool accept;
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bool remove_on_stop;
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bool writable;
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int socket_protocol;
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/* Socket options */
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bool keep_alive;
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bool no_delay;
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bool free_bind;
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bool transparent;
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bool broadcast;
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bool pass_cred;
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bool pass_sec;
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/* Only for INET6 sockets: issue IPV6_V6ONLY sockopt */
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SocketAddressBindIPv6Only bind_ipv6_only;
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int priority;
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int mark;
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size_t receive_buffer;
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size_t send_buffer;
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int ip_tos;
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int ip_ttl;
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size_t pipe_size;
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char *bind_to_device;
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char *tcp_congestion;
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bool reuse_port;
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long mq_maxmsg;
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long mq_msgsize;
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char *smack;
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char *smack_ip_in;
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char *smack_ip_out;
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bool selinux_context_from_net;
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char *user, *group;
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char *fdname;
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RateLimit trigger_limit;
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};
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SocketPeer *socket_peer_ref(SocketPeer *p);
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SocketPeer *socket_peer_unref(SocketPeer *p);
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int socket_acquire_peer(Socket *s, int fd, SocketPeer **p);
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DEFINE_TRIVIAL_CLEANUP_FUNC(SocketPeer*, socket_peer_unref);
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/* Called from the service code when collecting fds */
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int socket_collect_fds(Socket *s, int **fds);
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/* Called from the service code when a per-connection service ended */
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void socket_connection_unref(Socket *s);
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void socket_free_ports(Socket *s);
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int socket_instantiate_service(Socket *s);
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char *socket_fdname(Socket *s);
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extern const UnitVTable socket_vtable;
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const char* socket_exec_command_to_string(SocketExecCommand i) _const_;
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SocketExecCommand socket_exec_command_from_string(const char *s) _pure_;
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const char* socket_result_to_string(SocketResult i) _const_;
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SocketResult socket_result_from_string(const char *s) _pure_;
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const char* socket_port_type_to_string(SocketPort *p) _pure_;
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SocketType socket_port_type_from_string(const char *p) _pure_;
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DEFINE_CAST(SOCKET, Socket);
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