incompatible screen update

Lennart Poettering mzerqung at
Tue Feb 8 07:42:52 UTC 2011

On Fri, 04.02.11 16:30, Miroslav Lichvar (mlichvar at wrote:

> Hi,
> just a heads up, the screen package in rawhide was updated to a pre
> 4.1.0 git snapshot and after the update you won't be able to reattach
> to your old screen session.
> There are actually three incompatible changes:
> - the change in screen protocol
> - $HOME/.screen is used as socket directory instead of
>   /var/run/screen
> - unix sockets are used instead of named pipes
> The socket directory switch means that it's now not possibly to enable
> the multiuser feature just by adding suid root to the screen binary
> and chmoding the directory. To enable the feature, the package has to
> be recompiled with --with multiuser, it will switch the directory
> back, add suid bit and include tmpfs so systemd creates the directory
> on start.

$HOME is no place to place unix sockets. Unfortunately $HOME might be
one weirdo file systems which do not support that. Expect bug reports
about this soon.

Lennart Poettering - Red Hat, Inc.

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