On Sat, Mar 25, 2023 at 02:25:10PM +0100, Didier Kryn wrote:
> Le 25/03/2023 à 14:17, Didier Kryn a écrit :
> > Le 25/03/2023 à 09:07, aitor a écrit :
> > >
> > > Hi,
> > >
> > > On 24/3/23 21:42, Didier Kryn wrote:
> > > > Good question. The user can't. It could be any of the programs
> > > > involved in initializing a user session, like console-kit.
> > >
> > > It's elogind's function:
> > >
> > > static int user_mkdir_runtime_path(
> > >     const char *runtime_path,
> > >     uid_t uid,
> > >     gid_t gid,
> > >     uint64_t runtime_dir_size,
> > >     uint64_t runtime_dir_inodes);
> > >
> > > in "user-runtime-dir.c":
> > >
> > > https://github.com/elogind/elogind/blob/main/src/login/user-runtime-dir.c
> > >
> >     Kudos for finding it.
> >
> >     Maybe unrelated but I got this message when upgrading today:
> >
> > -----------------------------------------------------------------------------------------------------------
> > multipath-tools (0.8.5-2+deb11u1) bullseye-security; urgency=high
> >
> >   This uploaded fixes CVE-2022-41973:
> >   The fix involves switching from /dev/shm to systemd-tmpfiles.
> >   The tmpfs is mounted to /run/multipath.
> >
> >   If you have previously accessed /dev/shm directly in your setup,
> >   please update to the new path to facilitate this change.
> >
> >  -- Tobias Frost <tobi@???> Tue, 27 Dec 2022 09:46:24 +0100
> > -----------------------------------------------------------------------------------------------------------
> >
> >     So we've now got yet another tentacle of Systemd sneaking in.
> >
>     What's amazing is there's nothing like multipath installed on my system
> !

I think it's primarily a "target type" for the display mapper. It's
mentioned ("documented") in "man dmsetup", and I believe there is a
man page for it that comes with the multipath-tools package. Possibly
it has use cases.

Ralph.