我试图通过路径/ org / freedesktop / NetworkManager / Settings / 2（例如设置数量）调用D-Bus对象org.freedesktop.NetworkManager.Settings.Connection的GetSettings方法Qt应用程序。因此，当我尝试以
用户身份运行此应用程序时$ id
uid=1000(user) gid=1000(user) groups=1000(user),24(cdrom),27(sudo),30(dip),
46(plugdev),113(lpadmin),129(sambashare)
它运行正常没有错误，但是当我以lightdm greeter（lightdm用户启动进程）启动应用程序时，它记录了错误：
org.freedesktop.NetworkManager.Settings.PermissionDenied uid 108 has no permission
to perform this operation
我尝试使用下面的org.freedesktop.NetworkManager.conf来制作它：
<!DOCTYPE busconfig PUBLIC
"-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
"http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<busconfig>
<policy user="root">
<allow own="org.freedesktop.NetworkManager"/>
<allow send_destination="org.freedesktop.NetworkManager"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.PPP"/>
<allow send_interface="org.freedesktop.NetworkManager.SecretAgent"/>
<!-- These are there because some broken policies do
<deny send_interface="..." /> (see dbus-daemon(8) for details).
This seems to override that for the known VPN plugins.
-->
<allow send_destination="org.freedesktop.NetworkManager.openconnect"/>
<allow send_destination="org.freedesktop.NetworkManager.openswan"/>
<allow send_destination="org.freedesktop.NetworkManager.openvpn"/>
<allow send_destination="org.freedesktop.NetworkManager.pptp"/>
<allow send_destination="org.freedesktop.NetworkManager.vpnc"/>
<allow send_destination="org.freedesktop.NetworkManager.ssh"/>
<allow send_destination="org.freedesktop.NetworkManager.iodine"/>
<allow send_destination="org.freedesktop.NetworkManager.l2tp"/>
<allow send_destination="org.freedesktop.NetworkManager.libreswan"/>
<allow send_destination="org.freedesktop.NetworkManager.fortisslvpn"/>
<allow send_destination="org.freedesktop.NetworkManager.strongswan"/>
<allow send_interface="org.freedesktop.NetworkManager.VPN.Plugin"/>
<!-- Allow the custom name for the dnsmasq instance spawned by NM
from the dns dnsmasq plugin to own it's dbus name, and for
messages to be sent to it.
-->
<allow own="org.freedesktop.NetworkManager.dnsmasq"/>
<allow send_destination="org.freedesktop.NetworkManager.dnsmasq"/>
</policy>
<policy user="whoopsie">
<allow send_destination="org.freedesktop.NetworkManager"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.DBus.Introspectable"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.DBus.Properties"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Connection.Active"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Device"/>
</policy>
<policy context="default">
<deny own="org.freedesktop.NetworkManager"/>
<deny send_destination="org.freedesktop.NetworkManager"/>
<!-- Basic D-Bus API stuff -->
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.DBus.Introspectable"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.DBus.Properties"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.DBus.ObjectManager"/>
<!-- Devices (read-only properties, no methods) -->
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Device.Adsl"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Device.Bond"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Device.Bridge"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Device.Bluetooth"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Device.Wired"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Device.Generic"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Device.Gre"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Device.Infiniband"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Device.Macvlan"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Device.Modem"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Device.OlpcMesh"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Device.Team"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Device.Tun"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Device.Veth"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Device.Vlan"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.WiMax.Nsp"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.AccessPoint"/>
<!-- Devices (read-only, no security required) -->
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Device.WiMax"/>
<!-- Devices (read/write, secured with PolicyKit) -->
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Device.Wireless"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Device"/>
<!-- Core stuff (read-only properties, no methods) -->
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Connection.Active"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.DHCP4Config"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.DHCP6Config"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.IP4Config"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.IP6Config"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.VPN.Connection"/>
<!-- Core stuff (read/write, secured with PolicyKit) -->
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Settings"/>
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Settings.Connection"/>
<!-- Agents; secured with PolicyKit. Any process can talk to
the AgentManager API, but only NetworkManager can talk
to the agents themselves. -->
<allow send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.AgentManager"/>
<!-- Root-only functions -->
<deny send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager"
send_member="SetLogging"/>
<deny send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager"
send_member="Sleep"/>
<deny send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Settings"
send_member="LoadConnections"/>
<deny send_destination="org.freedesktop.NetworkManager"
send_interface="org.freedesktop.NetworkManager.Settings"
send_member="ReloadConnections"/>
<deny own="org.freedesktop.NetworkManager.dnsmasq"/>
<deny send_destination="org.freedesktop.NetworkManager.dnsmasq"/>
</policy>
<limit name="max_replies_per_connection">1024</limit>
<limit name="max_match_rules_per_connection">2048</limit>
</busconfig>
你能帮我把它弄好吗？
感谢。