[systemd-devel] udev database backwards compatibility guarantees

[Kay Sievers]

On Mon, Oct 27, 2014 at 2:22 PM, Alexander Larsson <alexl at redhat.com> wrote:
> On lör, 2014-10-25 at 13:45 +0200, Kay Sievers wrote:
>> > Kay, any ideas on the udev database stability?
>>
>> No stability. And so far no guarantees that things will not change.
>>
>> The versions of the udev daemon, libudev and the runtime data must
>> match. Any expectations about version mix and match would require a
>> promise we do not give at this moment.
>>
>> It might change with an imaginary "sd-device library", but it is very
>> unlikely to happen with the current udev.
>
> So, libudev will not be supportable as bundled in a sandboxed app then?

Right. I don't think we can make any such promises with the current code base.

The event monitor depends on a the same version of the running daemon,
or the properties which depend on the data in /run. Only the part that
finds devices, reads properties and enumerates /sys should be fine.

Kay