[Bug 39013] Cannot change the location of the folder put in /tmp/.wine-uid

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=39013

--- Comment #7 from Sebastian Lackner <sebastian at fds-team.de> ---
(In reply to Alexandre Julliard from comment #6)
> Yes, but XDG_RUNTIME_DIR is in theory supposed to be constant across a user
> session. Of course the user can still mess with it, but that would probably
> break other things too.
> 
> Do you have other suggestions?

Couldn't we use the code path for Android on all platforms, or does this have
other disadvantages? This would also ensure that people can only access the
wineserver sockets, when they have access to the wine prefix itself.

Using an environment variable is probably also fine, but it would be nice to
have some precautions against wine prefix corruptions, for example a file lock
on the registry or similar. I could imagine that XDG_RUNTIME_DIR is not set
when people execute wine directly from a cronjob for example.

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