tree-wide: remove Emacs lines from all files This should be handled fine now by .dir-locals.el, so need to carry that stuff in every file.

tree-wide: sort includes Sort the includes accoding to the new coding style.

core: remove SmackFileSystemRootLabel= again Apparently, util-linux' mount command implicitly drops the smack-related options anyway before passing them to the kernel, if the kernel doesn't know SMACK, hence there's no point in duplicating this in systemd. Fixes #1696

core: rename SmackFileSystemRoot= to SmackFileSystemRootLabel= That way it's in sync with the other SMACK label settings. https://github.com/systemd/systemd/pull/1664#issuecomment-150891270

util-lib: split our string related calls from util.[ch] into its own file string-util.[ch] There are more than enough calls doing string manipulations to deserve its own files, hence do something about it. This patch also sorts the #include blocks of all files that needed to be updated, according to the sorting suggestions from CODING_STYLE. Since pretty much every file needs our string manipulation functions this effectively means that most files have sorted #include blocks now. Also touches a few unrelated include files.

mount: add new SmackFileSystemRoot= setting for mount unit This option specifies the label to assign the root of the file system if it lacks the Smack extended attribute. Note that this option will be ignored if kernel does not support the Smack feature by runtime checking.

remove unused includes This patch removes includes that are not used. The removals were found with include-what-you-use which checks if any of the symbols from a header is in use.

mount: add new SloppyOptions= setting for mount units, mapping to mount(8)'s "-s" switch

core: allow transient mount units For now only What=, Options=, Type= are supported, and Where= is deduced from the unit name.

core: rework cgroup mask propagation Previously a cgroup setting down tree would result in cgroup membership additions being propagated up the tree and to the siblings, however a unit could never lose cgroup memberships again. With this change we'll make sure that both cgroup additions and removals propagate properly.

core: no need to list properties for PropertiesChanged messages anymore Since the vtable includes this information anyway, let's just use that

bus: decorate the various object vtables with SD_BUS_VTABLE_PROPERTY_CONST where appropriate

bus: rework message handlers to always take an error argument Message handler callbacks can be simplified drastically if the dispatcher automatically replies to method calls if errors are returned. Thus: add an sd_bus_error argument to all message handlers. When we dispatch a message handler and it returns negative or a set sd_bus_error we send this as message error back to the client. This means errors returned by handlers by default are given back to clients instead of rippling all the way up to the event loop, which is desirable to make things robust. As a side-effect we can now easily turn the SELinux checks into normal function calls, since the method call dispatcher will generate the right error replies automatically now. Also, make sure we always pass the error structure to all property and method handlers as last argument to follow the usual style of passing variables for return values as last argument.

core: convert PID 1 to libsystemd-bus This patch converts PID 1 to libsystemd-bus and thus drops the dependency on libdbus. The only remaining code using libdbus is a test case that validates our bus marshalling against libdbus' marshalling, and this dependency can be turned off. This patch also adds a couple of things to libsystem-bus, that are necessary to make the port work: - Synthesizing of "Disconnected" messages when bus connections are severed. - Support for attaching multiple vtables for the same interface on the same path. This patch also fixes the SetDefaultTarget() and GetDefaultTarget() bus calls which used an inappropriate signature. As a side effect we will now generate PropertiesChanged messages which carry property contents, rather than just invalidation information.

bus: remove static introspection file export

core: move ControlGroup and Slice properties out of the dbus "Unit" interface Slice/ControlGroup only really makes sense for unit types which actually have cgroups attached to them, hence move them out of the generic Unit interface and into the specific unit type interfaces. These fields will continue to be part of Unit though, simply because things are a log easier that way. However, regardless how this looks internally we should keep things clean and independent of the specific implementation of the inside.

dbus: expose cgroup properties in introspection everywhere

dbus: hookup runtime property changes for mouns, services, sockets, swaps too

core: general cgroup rework Replace the very generic cgroup hookup with a much simpler one. With this change only the high-level cgroup settings remain, the ability to set arbitrary cgroup attributes is removed, so is support for adding units to arbitrary cgroup controllers or setting arbitrary paths for them (especially paths that are different for the various controllers). This also introduces a new -.slice root slice, that is the parent of system.slice and friends. This enables easy admin configuration of root-level cgrouo properties. This replaces DeviceDeny= by DevicePolicy=, and implicitly adds in /dev/null, /dev/zero and friends if DeviceAllow= is used (unless this is turned off by DevicePolicy=).

core: add bus API and systemctl commands for altering cgroup parameters during runtime

selinux: rework selinux access check logic a) Instead of parsing the bus messages inside of selinux-access.c simply pass everything pre-parsed in the functions b) implement the access checking with a macro that resolves to nothing on non-selinux builds c) split out the selinux checks into their own sources selinux-util.[ch] d) this unifies the job creation code behind the D-Bus calls Manager.StartUnit() and Unit.Start().

unit: split off KillContext from ExecContext containing only kill definitions

mount: replace PID1 internal fstab parser with generator Bit by bit we should remove non-unit parsing from PID 1 and move into generators, to clean up our code base a bit and clearly separate parsers.

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.

move libsystemd_core.la sources into core/