One-way dbus properties

[Ratan Gupta]

Hi Adriana,

How is it different from readonly property, so suppose there is a object 
which implements this interface.

when this object gets created, as part of creation we can set the 
property, but after object creation user can,t set

the property.

Am I missing something here?

Ratan

On 24/04/19 8:47 PM, Adriana Kobylak wrote:
> Wanted to get thoughts on how attempting to clear one-way dbus 
> properties should be handled.
>
> There are some properties like Field Mode that are intended to be 
> one-way, meaning that you can set them but not clear them:
>
> - 
> https://github.com/openbmc/phosphor-dbus-interfaces/blob/master/xyz/openbmc_project/Control/FieldMode.interface.yaml
>       description: >
>           Keeps track of whether the BMC is in field mode. Enabling 
> field mode
>           is intended to be a one-way operation.
>
> If there's a call to clear the property value, currently this is a 
> no-op and the REST call returns success but the value is not changed.
> Should an error be returned to the user? It's like a read-only 
> property but only after it's being set the first time.
>