1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
#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;
typedef struct SocketPeer SocketPeer;
#include "mount.h"
#include "service.h"
#include "socket-util.h"
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_USB_FUNCTION,
_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_START_LIMIT_HIT,
SOCKET_FAILURE_TRIGGER_LIMIT_HIT,
SOCKET_FAILURE_SERVICE_START_LIMIT_HIT,
_SOCKET_RESULT_MAX,
_SOCKET_RESULT_INVALID = -1
} SocketResult;
typedef struct SocketPort {
Socket *socket;
SocketType type;
int fd;
int *auxiliary_fds;
int n_auxiliary_fds;
SocketAddress address;
char *path;
sd_event_source *event_source;
LIST_FIELDS(struct SocketPort, port);
} SocketPort;
struct Socket {
Unit meta;
LIST_HEAD(SocketPort, ports);
Set *peers_by_address;
unsigned n_accepted;
unsigned n_connections;
unsigned max_connections;
unsigned max_connections_per_source;
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;
DynamicCreds dynamic_creds;
/* 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;
bool writable;
int socket_protocol;
/* 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;
bool reset_cpu_usage:1;
char *fdname;
RateLimit trigger_limit;
};
struct SocketPeer {
unsigned n_ref;
Socket *socket;
union sockaddr_union peer;
};
SocketPeer *socket_peer_ref(SocketPeer *p);
SocketPeer *socket_peer_unref(SocketPeer *p);
DEFINE_TRIVIAL_CLEANUP_FUNC(SocketPeer*, socket_peer_unref);
/* Called from the service code when collecting fds */
int socket_collect_fds(Socket *s, int **fds);
/* Called from the service code when a per-connection service ended */
void socket_connection_unref(Socket *s);
void socket_free_ports(Socket *s);
int socket_instantiate_service(Socket *s);
char *socket_fdname(Socket *s);
extern const UnitVTable socket_vtable;
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_;
|
