Public bug reported:
On Ubuntu 24.04.1, systemd 255.4-1ubuntu8.4, the fix for bug #2019026
causes files under /tmp to be removed if their age is greater than 30
days. However, there are files under /tmp that should not be removed at
runtime regardless of their age (whether they belong in that directory
at all is a separate question), for example those listed in
/usr/lib/tmpfiles.d/x11.conf (I have witnessed the disappearance of X11
lock files, though the sockets are still there; /tmp/.XIM-unix and
/tmp/.font-unix have also disappeared).
I am not familiar enough with systemd-tmpfiles to figure out whether
those files can be properly protected from removal with a tmpfiles.d
configuration change, but I do know that the current configuration does
not do that.
I noticed this problem when a couple of TigerVNC sessions became
inaccessible a month after starting them, which turned out to be because
the "cached" password file in /tmp/tigervnc.XXXXXX/passwd was removed.
This is at least partially a bug in tigervnc, but the problem also
affects other critical not-to-be-removed-or-else files under /tmp.
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2088268
Title:
systemd /tmp cleaning removes files that it shouldn't
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