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dbus: make DeviceAllow=/DevicePolicy= writable
[thirdparty/systemd.git] / src / core / dbus-socket.c
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d6c9574f 1/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4139c1b2
LP		 2
3/***
4 This file is part of systemd.
5
6 Copyright 2010 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
5430f7f2
LP		 9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
4139c1b2
LP		 11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
5430f7f2 16 Lesser General Public License for more details.
4139c1b2 17
5430f7f2 18 You should have received a copy of the GNU Lesser General Public License
4139c1b2
LP		 19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20***/
21
c0120d99
LP		 22#include <errno.h>
23
4139c1b2 24#include "dbus-unit.h"
4139c1b2 25#include "dbus-execute.h"
4819ff03 26#include "dbus-kill.h"
4ad49000 27#include "dbus-cgroup.h"
bfebab7f 28#include "dbus-common.h"
cad45ba1 29#include "selinux-access.h"
4ad49000 30#include "dbus-socket.h"
4139c1b2 31
4288f619
LP		 32#define BUS_SOCKET_INTERFACE \
33 " <interface name=\"org.freedesktop.systemd1.Socket\">\n" \
34 " <property name=\"BindIPv6Only\" type=\"b\" access=\"read\"/>\n" \
35 " <property name=\"Backlog\" type=\"u\" access=\"read\"/>\n" \
36 " <property name=\"TimeoutUSec\" type=\"t\" access=\"read\"/>\n" \
fe68089d
LP		 37 BUS_EXEC_COMMAND_INTERFACE("ExecStartPre") \
38 BUS_EXEC_COMMAND_INTERFACE("ExecStartPost") \
39 BUS_EXEC_COMMAND_INTERFACE("ExecStopPre") \
40 BUS_EXEC_COMMAND_INTERFACE("ExecStopPost") \
4288f619 41 BUS_EXEC_CONTEXT_INTERFACE \
4819ff03 42 BUS_KILL_CONTEXT_INTERFACE \
4288f619
LP		 43 " <property name=\"ControlPID\" type=\"u\" access=\"read\"/>\n" \
44 " <property name=\"BindToDevice\" type=\"s\" access=\"read\"/>\n" \
45 " <property name=\"DirectoryMode\" type=\"u\" access=\"read\"/>\n" \
46 " <property name=\"SocketMode\" type=\"u\" access=\"read\"/>\n" \
47 " <property name=\"Accept\" type=\"b\" access=\"read\"/>\n" \
4fd5948e
LP		 48 " <property name=\"KeepAlive\" type=\"b\" access=\"read\"/>\n" \
49 " <property name=\"Priority\" type=\"i\" access=\"read\"/>\n" \
2419cc5b
LP		 50 " <property name=\"ReceiveBuffer\" type=\"t\" access=\"read\"/>\n" \
51 " <property name=\"SendBuffer\" type=\"t\" access=\"read\"/>\n" \
52 " <property name=\"IPTOS\" type=\"i\" access=\"read\"/>\n" \
53 " <property name=\"IPTTL\" type=\"i\" access=\"read\"/>\n" \
54 " <property name=\"PipeSize\" type=\"t\" access=\"read\"/>\n" \
55 " <property name=\"FreeBind\" type=\"b\" access=\"read\"/>\n" \
6b6d2dee 56 " <property name=\"Transparent\" type=\"b\" access=\"read\"/>\n" \
ec6370a2 57 " <property name=\"Broadcast\" type=\"b\" access=\"read\"/>\n" \
271b032a 58 " <property name=\"PassCredentials\" type=\"b\" access=\"read\"/>\n" \
54ecda32 59 " <property name=\"PassSecurity\" type=\"b\" access=\"read\"/>\n" \
2419cc5b 60 " <property name=\"Mark\" type=\"i\" access=\"read\"/>\n" \
4e1e43c8
LP		 61 " <property name=\"MaxConnections\" type=\"u\" access=\"read\"/>\n" \
62 " <property name=\"NAccepted\" type=\"u\" access=\"read\"/>\n" \
63 " <property name=\"NConnections\" type=\"u\" access=\"read\"/>\n" \
cb4fdfc1
LP		 64 " <property name=\"MessageQueueMaxMessages\" type=\"x\" access=\"read\"/>\n" \
65 " <property name=\"MessageQueueMessageSize\" type=\"x\" access=\"read\"/>\n" \
67419600 66 " <property name=\"Listen\" type=\"a(ss)\" access=\"read\"/>\n" \
cfc4eb4c 67 " <property name=\"Result\" type=\"s\" access=\"read\"/>\n" \
0eb59ccf
AK		 68 " <property name=\"SmackLabel\" type=\"s\" access=\"read\"/>\n" \
69 " <property name=\"SmackLabelIPIn\" type=\"s\" access=\"read\"/>\n" \
70 " <property name=\"SmackLabelIPOut\" type=\"s\" access=\"read\"/>\n" \
4288f619
LP		 71 " </interface>\n" \
72
73#define INTROSPECTION \
74 DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
75 "<node>\n" \
76 BUS_UNIT_INTERFACE \
77 BUS_SOCKET_INTERFACE \
78 BUS_PROPERTIES_INTERFACE \
c4e2ceae 79 BUS_PEER_INTERFACE \
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LP		 80 BUS_INTROSPECTABLE_INTERFACE \
81 "</node>\n"
82
05feefe0
LP		 83#define INTERFACES_LIST \
84 BUS_UNIT_INTERFACES_LIST \
85 "org.freedesktop.systemd1.Socket\0"
86
9a60da28 87const char bus_socket_interface[] _introspect_("Socket") = BUS_SOCKET_INTERFACE;
4139c1b2 88
c4e2ceae
LP		 89const char bus_socket_invalidating_properties[] =
90 "ExecStartPre\0"
91 "ExecStartPost\0"
92 "ExecStopPre\0"
93 "ExecStopPost\0"
94 "ControlPID\0"
95 "NAccepted\0"
cfc4eb4c
LP		 96 "NConnections\0"
97 "Result\0";
c4e2ceae 98
c0120d99 99static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_socket_append_bind_ipv6_only, socket_address_bind_ipv6_only, SocketAddressBindIPv6Only);
cfc4eb4c 100static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_socket_append_socket_result, socket_result, SocketResult);
c0120d99 101
67419600
OS		 102static int bus_socket_append_listen(DBusMessageIter *i, const char *property, void *data) {
103
104 Socket *s = SOCKET(data);
105 SocketPort *p;
106 DBusMessageIter array, stru;
107
108 assert(data);
109 assert(property);
110 assert(s);
111
112 if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "(ss)", &array))
113 return log_oom();
114
115 LIST_FOREACH(port, p, s->ports) {
116 const char *type = socket_port_type_to_string(p);
7fd1b19b 117 _cleanup_free_ char *address = NULL;
67419600
OS		 118 const char *a;
119
120 if (!dbus_message_iter_open_container(&array, DBUS_TYPE_STRUCT, NULL, &stru))
121 return log_oom();
122
123 if (!dbus_message_iter_append_basic(&stru, DBUS_TYPE_STRING, &type))
124 return log_oom();
125
126 switch (p->type) {
127 case SOCKET_SOCKET: {
128 int r;
129
130 r = socket_address_print(&p->address, &address);
131 if (r) {
132 log_error("socket_address_print failed: %s", strerror(-r));
133 return r;
134 }
135 a = address;
136 break;
137 }
138
139 case SOCKET_SPECIAL:
140 case SOCKET_MQUEUE:
141 case SOCKET_FIFO:
142 a = p->path;
143 break;
144
145 default:
146 a = type;
147 }
148
149 if (!dbus_message_iter_append_basic(&stru, DBUS_TYPE_STRING, &a))
150 return -ENOMEM;
151
152 if (!dbus_message_iter_close_container(&array, &stru))
153 return -ENOMEM;
154 }
155
156 if (!dbus_message_iter_close_container(i, &array))
157 return -ENOMEM;
158
159 return 0;
160}
161
d200735e
MS		 162static const BusProperty bus_socket_properties[] = {
163 { "BindIPv6Only", bus_socket_append_bind_ipv6_only, "s", offsetof(Socket, bind_ipv6_only) },
164 { "Backlog", bus_property_append_unsigned, "u", offsetof(Socket, backlog) },
165 { "TimeoutUSec", bus_property_append_usec, "t", offsetof(Socket, timeout_usec) },
166 BUS_EXEC_COMMAND_PROPERTY("ExecStartPre", offsetof(Socket, exec_command[SOCKET_EXEC_START_PRE]), true ),
167 BUS_EXEC_COMMAND_PROPERTY("ExecStartPost", offsetof(Socket, exec_command[SOCKET_EXEC_START_POST]), true ),
168 BUS_EXEC_COMMAND_PROPERTY("ExecStopPre", offsetof(Socket, exec_command[SOCKET_EXEC_STOP_PRE]), true ),
169 BUS_EXEC_COMMAND_PROPERTY("ExecStopPost", offsetof(Socket, exec_command[SOCKET_EXEC_STOP_POST]), true ),
170 { "ControlPID", bus_property_append_pid, "u", offsetof(Socket, control_pid) },
171 { "BindToDevice", bus_property_append_string, "s", offsetof(Socket, bind_to_device), true },
172 { "DirectoryMode", bus_property_append_mode, "u", offsetof(Socket, directory_mode) },
173 { "SocketMode", bus_property_append_mode, "u", offsetof(Socket, socket_mode) },
174 { "Accept", bus_property_append_bool, "b", offsetof(Socket, accept) },
175 { "KeepAlive", bus_property_append_bool, "b", offsetof(Socket, keep_alive) },
176 { "Priority", bus_property_append_int, "i", offsetof(Socket, priority) },
177 { "ReceiveBuffer", bus_property_append_size, "t", offsetof(Socket, receive_buffer) },
178 { "SendBuffer", bus_property_append_size, "t", offsetof(Socket, send_buffer) },
179 { "IPTOS", bus_property_append_int, "i", offsetof(Socket, ip_tos) },
180 { "IPTTL", bus_property_append_int, "i", offsetof(Socket, ip_ttl) },
181 { "PipeSize", bus_property_append_size, "t", offsetof(Socket, pipe_size) },
182 { "FreeBind", bus_property_append_bool, "b", offsetof(Socket, free_bind) },
183 { "Transparent", bus_property_append_bool, "b", offsetof(Socket, transparent) },
184 { "Broadcast", bus_property_append_bool, "b", offsetof(Socket, broadcast) },
185 { "PassCredentials",bus_property_append_bool, "b", offsetof(Socket, pass_cred) },
54ecda32 186 { "PassSecurity", bus_property_append_bool, "b", offsetof(Socket, pass_sec) },
67419600 187 { "Listen", bus_socket_append_listen, "a(ss)", 0, },
d200735e
MS		 188 { "Mark", bus_property_append_int, "i", offsetof(Socket, mark) },
189 { "MaxConnections", bus_property_append_unsigned, "u", offsetof(Socket, max_connections) },
190 { "NConnections", bus_property_append_unsigned, "u", offsetof(Socket, n_connections) },
191 { "NAccepted", bus_property_append_unsigned, "u", offsetof(Socket, n_accepted) },
192 { "MessageQueueMaxMessages", bus_property_append_long, "x", offsetof(Socket, mq_maxmsg) },
193 { "MessageQueueMessageSize", bus_property_append_long, "x", offsetof(Socket, mq_msgsize) },
cfc4eb4c 194 { "Result", bus_socket_append_socket_result, "s", offsetof(Socket, result) },
0eb59ccf
AK		 195 { "SmackLabel", bus_property_append_string, "s", offsetof(Socket, smack), true },
196 { "SmackLabelIPIn", bus_property_append_string, "s", offsetof(Socket, smack_ip_in), true },
197 { "SmackLabelIPOut",bus_property_append_string, "s", offsetof(Socket, smack_ip_out), true },
d200735e
MS		 198 { NULL, }
199};
200
5e8d1c9a 201DBusHandlerResult bus_socket_message_handler(Unit *u, DBusConnection *c, DBusMessage *message) {
ac155bb8 202 Socket *s = SOCKET(u);
d200735e 203 const BusBoundProperties bps[] = {
4ad49000
LP		 204 { "org.freedesktop.systemd1.Unit", bus_unit_properties, u },
205 { "org.freedesktop.systemd1.Socket", bus_socket_properties, s },
206 { "org.freedesktop.systemd1.Socket", bus_exec_context_properties, &s->exec_context },
207 { "org.freedesktop.systemd1.Socket", bus_kill_context_properties, &s->kill_context },
208 { "org.freedesktop.systemd1.Socket", bus_cgroup_context_properties, &s->cgroup_context },
d200735e 209 { NULL, }
4139c1b2
LP		 210 };
211
cad45ba1
LP		 212 SELINUX_UNIT_ACCESS_CHECK(u, c, message, "status");
213
d200735e 214 return bus_default_message_handler(c, message, INTROSPECTION, INTERFACES_LIST, bps);
4139c1b2 215}
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