1 <!-- This configuration file controls the systemwide message bus.
2 Add a system-local.conf and edit that rather than changing this
5 <!-- Note that there are any number of ways you can hose yourself
6 security-wise by screwing up this file; in particular, you
7 probably don't want to listen on any more addresses, add any more
8 auth mechanisms, run as a different user, etc. -->
10 <!DOCTYPE busconfig PUBLIC "-//freedesktop//DTD D-Bus Bus Configuration 1.0//EN"
11 "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
14 <!-- Our well-known bus type, do not change this -->
17 <!-- Run as special user -->
18 <user>@DBUS_USER@</user>
20 <!-- Fork into daemon mode -->
23 <!-- We use system service launching using a helper -->
24 <standard_system_servicedirs/>
26 <!-- This is a setuid helper that is used to launch system services -->
27 <servicehelper>@DBUS_LIBEXECDIR@/dbus-daemon-launch-helper</servicehelper>
29 <!-- Write a pid file -->
30 <pidfile>@DBUS_SYSTEM_PID_FILE@</pidfile>
32 <!-- Enable logging to syslog -->
35 <!-- Only allow socket-credentials-based authentication -->
38 <!-- Only listen on a local socket. (abstract=/path/to/socket
39 means use abstract namespace, don't really create filesystem
40 file; only Linux supports this. Use path=/whatever on other
42 <listen>@DBUS_SYSTEM_BUS_DEFAULT_ADDRESS@</listen>
44 <policy context="default">
45 <!-- All users can connect to system bus -->
48 <!-- Holes must be punched in service configuration files for
49 name ownership and sending method calls -->
51 <deny send_type="method_call"/>
53 <!-- Signals and reply messages (method returns, errors) are allowed
55 <allow send_type="signal"/>
56 <allow send_requested_reply="true" send_type="method_return"/>
57 <allow send_requested_reply="true" send_type="error"/>
59 <!-- All messages may be received by default -->
60 <allow receive_type="method_call"/>
61 <allow receive_type="method_return"/>
62 <allow receive_type="error"/>
63 <allow receive_type="signal"/>
65 <!-- Allow anyone to talk to the message bus -->
66 <allow send_destination="org.freedesktop.DBus"
67 send_interface="org.freedesktop.DBus" />
68 <allow send_destination="org.freedesktop.DBus"
69 send_interface="org.freedesktop.DBus.Introspectable"/>
70 <allow send_destination="org.freedesktop.DBus"
71 send_interface="org.freedesktop.DBus.Properties"/>
72 <!-- But disallow some specific bus services -->
73 <deny send_destination="org.freedesktop.DBus"
74 send_interface="org.freedesktop.DBus"
75 send_member="UpdateActivationEnvironment"/>
76 <deny send_destination="org.freedesktop.DBus"
77 send_interface="org.freedesktop.DBus.Debug.Stats"/>
78 <deny send_destination="org.freedesktop.DBus"
79 send_interface="org.freedesktop.systemd1.Activator"/>
82 <!-- Only systemd, which runs as root, may report activation failures. -->
84 <allow send_destination="org.freedesktop.DBus"
85 send_interface="org.freedesktop.systemd1.Activator"/>
88 <!-- root may monitor the system bus. -->
90 <allow send_destination="org.freedesktop.DBus"
91 send_interface="org.freedesktop.DBus.Monitoring"/>
94 <!-- If the Stats interface was enabled at compile-time, root may use it.
95 Copy this into system.local.conf or system.d/*.conf if you want to
96 enable other privileged users to view statistics and debug info -->
98 <allow send_destination="org.freedesktop.DBus"
99 send_interface="org.freedesktop.DBus.Debug.Stats"/>
102 <!-- Include legacy configuration location -->
103 <include ignore_missing="yes">@SYSCONFDIR_FROM_PKGDATADIR@/dbus-1/system.conf</include>
105 <!-- The defaults for these limits are hard-coded in dbus-daemon.
107 Times are in milliseconds (ms); 1000ms = 1 second
108 133169152 bytes = 127 MiB
109 33554432 bytes = 32 MiB
110 150000ms = 2.5 minutes -->
111 <!-- <limit name="max_incoming_bytes">133169152</limit> -->
112 <!-- <limit name="max_incoming_unix_fds">64</limit> -->
113 <!-- <limit name="max_outgoing_bytes">133169152</limit> -->
114 <!-- <limit name="max_outgoing_unix_fds">64</limit> -->
115 <!-- <limit name="max_message_size">33554432</limit> -->
116 <!-- <limit name="max_message_unix_fds">16</limit> -->
117 <!-- <limit name="service_start_timeout">25000</limit> -->
118 <!-- <limit name="auth_timeout">5000</limit> -->
119 <!-- <limit name="pending_fd_timeout">150000</limit> -->
120 <!-- <limit name="max_completed_connections">2048</limit> -->
121 <!-- <limit name="max_incomplete_connections">64</limit> -->
122 <!-- <limit name="max_connections_per_user">256</limit> -->
123 <!-- <limit name="max_pending_service_starts">512</limit> -->
124 <!-- <limit name="max_names_per_connection">512</limit> -->
125 <!-- <limit name="max_match_rules_per_connection">512</limit> -->
126 <!-- <limit name="max_replies_per_connection">128</limit> -->
128 <!-- Config files are placed here that among other things, punch
129 holes in the above policy for specific services. -->
130 <includedir>system.d</includedir>
132 <includedir>@SYSCONFDIR_FROM_PKGDATADIR@/dbus-1/system.d</includedir>
134 <!-- This is included last so local configuration can override what's
135 in this standard file -->
136 <include ignore_missing="yes">@SYSCONFDIR_FROM_PKGDATADIR@/dbus-1/system-local.conf</include>
138 <include if_selinux_enabled="yes" selinux_root_relative="yes">contexts/dbus_contexts</include>