dbus org.freedesktop.DBus.Error.AccessDenied 错误处理

在使用 dbus时，bus type 是system, dbus-daemon 也是以–system 模式拉起的。运行某个客户端，向dbus 建立链接，并输出bus name 时，出现如下错误：
org.freedesktop.DBus.Error.AccessDenied

修改system.conf中如下部分

<!-- Holes must be punched in service configuration files for
         name ownership and sending method calls -->
    <deny own="*"/>
    <deny send_type="method_call"/>

为

<!-- Holes must be punched in service configuration files for
         name ownership and sending method calls -->
    <allow own="*"/>
    <allow send_type="method_call"/>

或者增加配置文xxx.conf件到/etc/dbus-1/system.d/ 目录下

<!DOCTYPE busconfig PUBLIC
 "-//freedesktop//DTD D-BUS Bus Configuration 1.0//EN"
 "http://www.freedesktop.org/standards/dbus/1.0/busconfig.dtd">
<busconfig>

  <!-- Only root and devel can own the service -->
  <policy user="root">
    <allow own="com.aa.xxxx.camera"/>
    <allow send_destination="com.aa.xxxx.camera"/>
    <allow send_interface="com.aa.xxxx.camera"/>
  </policy>

</busconfig>

来源：CSDN

作者：noyoghurt

链接：https://blog.csdn.net/yager0203/article/details/89321999