This naming convention is more inline with other systemd daemon
unit names (systemd-logind.service, systemd-localed.service etc)
The companion .socket units have also been renamed, however the
-trigger and -settle units keep their current name as these are
not directly related to daemon process itself.
The previous systemd-timedated-ntp.target was suffering by the problem
that NTP implementations enabled via the machanism could not be disabled
the obvious way on the "systemctl disable" command line. Replace
systemd-timedated-ntp.target by a list of implementations we try in
turn. The list is encoded in $pkgdatadir/ntp-units.
This replaces the symlink based dependency by an explicit one in the
unit file so that we avoid the dangling symlink when no display manager
is installed.
The rule is that units that encapsulate our own code are prefixed with
"systemd-". Since the fsck units invoke our own code, hence add the
missing prefix. Since a long long time the fsck units didn't invoke the
naked fsck binaries anymore, and it is unlikely that this well ever
change. On the opposite: the code in systemd-fsck will probably get more
complex over time to handle fsck progress to plymouth forwarding.
Same for quotacheck (but not quotaon!)
Since the binary name is now hidden away in /usr/lib/ the primary user
handle for the udev service is the unit name, hence change the man page
to be available under the unit name, and make the binary name an alias
for it.
since the binaries share much of the same code and we better load only
one binary instead of two from disk at early boot let's merge the three
readahead binaries into one. This also allows us to drop a lot of
duplicated code.
TTYVTDisallocate=yes already clears the VT. agetty does not need to do
it again. Run it with --noclear.
Felix Miata found the double clearing confusing in this bugreport:
https://bugzilla.redhat.com/show_bug.cgi?id=828007
Add a comment explaining what clears the VT.
