[systemd-devel] [systemd-level]: how to set property to read only in systemd?

[www]

hi Lennart,


I mean the DBUS property.

root at demoboard:/# busctl set-property org.freedesktop.DBus /org/freedesktop/DBus org.freedesktop.DBus Features as 1 x

Cannot set read-only property         -- the default




root at demoboard:/# busctl set-property com.sugon.sensors.DISCRETE /com/sugon/sensors/HDD/HDD4_Status xyz.openbmc_project.Sensor.DiscreteAll FanDeviceInserted b true              -- new add

root at demoboard:/#



I want the property on Dbus is read only. Just can modify by the special method and cannot  modify the property directly. How can I change it like this?


thanks,
Byron





At 2020-04-21 00:43:00, "Lennart Poettering" <lennart at poettering.net> wrote:
>On Mo, 20.04.20 23:00, www (ouyangxuan10 at 163.com) wrote:
>
>> dear all;
>>
>>
>> How to set some properties in systemd to read-only？ Who can give the sample code?
>
>I don't understand the question. Do you mean a D-Bus property? They
>generally are read-only for unprivileged bus clients. With a PolicyKit
>action configuration you can open them up, but typically unprivileged
>clients can't change them.
>
>Lennart
>
>--
>Lennart Poettering, Berlin
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