This setting allows services to run in an ephemeral copy of the root
directory or root image. To make sure the ephemeral copies are always
cleaned up, we add a tmpfiles snippet to unconditionally clean up
/var/lib/systemd/ephemeral. To prevent in use ephemeral copies from
being cleaned up by tmpfiles, we use the newly added COPY_LOCK_BSD
and BTRFS_SNAPSHOT_LOCK_BSD flags to take a BSD lock on the ephemeral
copies which instruct tmpfiles to not touch those ephemeral copies as
long as the BSD lock is held.
Now that sd-stub will place the PCR signature and its public key in
the initrd's /.extra/ directory, let's copy it from there into /run/
from userspace. This is done because /.extra/ is on the initrd's tmpfs
which will be emptied during the initrd → host transition. Since we want
these two files to survive we'll copy them – if they exist – into /run/
where they will survive the transition.
Thus, with this last change the files will have safely propagated from
their PE sections into files in /run/ where userspace can find them
The paths in /run/ happen to be the exact ones that
systemd-cryptenroll/systemd-cryptsetup/systemd-creds look for them.
Many distributions ship systemd-networkd as a separate file so we
need to be able to ship the tmpfiles networkd entries as part of
that separate networkd package. Let's split the networkd entries
into a separate file to make that possible.
HAVE_SMACK_RUN_LABEL was dropped back in 348b44372f,
so one line in etc.conf was not rendered as expected ;(
Checking if names are defined is paying for itself!
2021-05-19 10:24:43 +09:00
Renamed from tmpfiles.d/systemd.conf.m4 (Browse further)
