units: specify timeouts for more oneshot services Even trivial service occasionally get stuck, for example when there's a problem with the journal. There's nothing more annoying that looking at the cylon eye for a job with an infinite timeout. Use standard 90s for jobs that do some work, and 30s for those which should be almost instantenous.

readahead: wipe out readahead

units/systemd-sysctl.service.in: run after load-modules Modules might or will register new sysctl options. [zj: This mechanism of adding modules just to reliably set sysctl attributes is not ideal. Nevertheless, sysctl for dynamically created attributes is simply broken, and this is the easiest workaround.] https://bugzilla.redhat.com/show_bug.cgi?id=1022977 https://bugzilla.novell.com/show_bug.cgi?id=725412

units: don't conditionalize sysctl service We install two sysctl snippets ourselves, hence the condition will always trigger, so no point in tryng to optimize things with this, it just will make things slower, if anything.

sysctl: allow overwriting of values specified in "later" files

Revert "units: ignore systemd-sysctl on shutdown" This reverts commit faeffa73a81ab5b59acfadeb571431fb0e42af70. There isn't really much point in dropping the Conflicts= since shutting down this service is basically free as it doesn't have anything running. Also, the patch was incomplete, because shutdown.target was still listed in Before=.

units: ignore systemd-sysctl on shutdown No need to try to stop systemd-sysctl on shutdown as this service doesn't have ExecStop= anyways.

man: add documentation for the binfmt, modules-load, sysctl services

units: introduce new Documentation= field and make use of it everywhere This should help making the boot process a bit easier to explore and understand for the administrator. The simple idea is that "systemctl status" now shows a link to documentation alongside the other status and decriptionary information of a service. This patch adds the necessary fields to all our shipped units if we have proper documentation for them.

units: run sysctl stuff only when /proc/sys is actually writable, to quieten container boots a little

relicense to LGPLv2.1 (with exceptions) We finally got the OK from all contributors with non-trivial commits to relicense systemd from GPL2+ to LGPL2.1+. Some udev bits continue to be GPL2+ for now, but we are looking into relicensing them too, to allow free copy/paste of all code within systemd. The bits that used to be MIT continue to be MIT. The big benefit of the relicensing is that closed source code may now link against libsystemd-login.so and friends.

binfmt, modules-load, sysctl, tmpfiles: add missing ConditionDirectoryNotEmpty=

unit: distuingish mandatory from triggering conditions

units: move a couple of units from base.target to sysinit.target

sysctl: implement native sysctl tool to support Debian-style /etc/sysctl.d