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.

shared: include what we use The next step of a general cleanup of our includes. This one mostly adds missing includes but there are a few removals as well.

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

util-lib: split out allocation calls into alloc-util.[ch]

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.

util-lib: get_current_dir_name() can return errors other than ENOMEM get_current_dir_name() can return a variety of errors, not just ENOMEM, hence don't blindly turn its errors to ENOMEM, but return correct errors in path_make_absolute_cwd(). This trickles down into a couple of other functions, some of which receive unrelated minor fixes too with this commit.

ask-password: add support for caching passwords in the kernel keyring This adds support for caching harddisk passwords in the kernel keyring if it is available, thus supporting caching without Plymouth being around. This is also useful for hooking up "gdm-auto-login" with the collected boot-time harddisk password, in order to support gnome keyring passphrase unlocking via the HDD password, if it is the same. Any passwords added to the kernel keyring this way have a timeout of 2.5min at which time they are purged from the kernel.

tree-wide: make use of the fact that strv_free() returns NULL Another Coccinelle patch.

core: rename SystemdRunningAs to ManagerRunningAs It's primarily just a property of the Manager object after all, and we try to refer to PID 1 as "manager" instead of "systemd", hence let's to stick to this here too.

sysv-generator: initialize LookupPaths just once With debugging on, sysv-generator would print the full set of lookup paths for *every* sysv script. While at it, pass LookupPaths as a pointer in sysv-generator, and constify it everywhere.

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.

path-lookup: allow /run to override /etc in generator search Generators are different than unit files: they are never automatically generated, so there's no point in allowing /etc to override /run. On the other hand, overriding /etc might be useful in some cases.

Implement masking and overriding of generators Sometimes it is necessary to stop a generator from running. Either because of a bug, or for testing, or some other reason. The only way to do that would be to rename or chmod the generator binary, which is inconvenient and does not survive upgrades. Allow masking and overriding generators similarly to units and other configuration files. For the systemd instance, masking would be more common, rather than overriding generators. For the user instances, it may also be useful for users to have generators in $XDG_CONFIG_HOME to augment or override system-wide generators. Directories are searched according to the usual scheme (/usr/lib, /usr/local/lib, /run, /etc), and files with the same name in higher priority directories override files with the same name in lower priority directories. Empty files and links to /dev/null mask a given name. https://bugs.freedesktop.org/show_bug.cgi?id=87230

path-lookup, systemctl: export lookup_paths_init_from_scope() from shared/install.c and use it

Fix order and document user unit dirs Fixup for 718880ba0d 'add a transient user unit directory'.

Rename user_runtime to user_runtime_dir This makes this function name similar to user_config_home() and makes it match the name of the environment variable.

add a transient user unit directory This patch adds a transient user unit directory under `$XDG_RUNTIME_DIR/systemd/user/` and stores transient user-instance units (such as those created by `systemd-run --user`) under there instead of putting them in $XDG_CONFIG_HOME/systemd/user/. Fixes https://bugs.freedesktop.org/show_bug.cgi?id=67331

Merge systemd-verify with systemd-analyze

path-lookup: make SYSTEMD_UNIT_PATH more flexible It can now contain more than one directory, and can be used to only prepend, not totally override, the normal load path.

core: remove systemd_running_as lookup functions They are unused and unlikely to ever be.

path-lookup: don't make ~/.local/share/systemd/user a symlink We already encourage upstreams to keep the default configuration separate from user customizations for software that is installed in the system location. Let's allow that separation also for software that is installed in the home directory. Some discussion: http://thread.gmane.org/gmane.comp.sysutils.systemd.devel/19627

shared: rename path_strv_canonicalize_absolute functions Since 12ed81d9 path_strv_canonicalize_absolute leaves the search list relative to the given root directory instead of resolving paths to their true location as the name implies. To better reflect this behavior rename to the less strongly worded path_strv_resolve.

path-lookup: don't hardcode .config If XDG_CONFIG_HOME is set, then we should respect that.

Make systemctl --root look for files in the proper places Running systemctl enable/disable/set-default/... with the --root option under strace reveals that it accessed various files and directories in the main fs, and not underneath the specified root. This can lead to correct results only when the layout and configuration in the container are identical, which often is not the case. Fix this by adding the specified root to all file access operations. This patch does not handle some corner cases: symlinks which point outside of the specified root might be interpreted differently than they would be by the kernel if the specified root was the real root. But systemctl does not create such symlinks by itself, and I think this is enough of a corner case not to be worth the additional complexity of reimplementing link chasing in systemd. Also, simplify the code in a few places and remove an hypothetical memory leak on error.

shared: include root when canonicalizing conf paths The conf_files_list family accepts an alternate root path to prefix all directories in the list but path_strv_canonicalize_uniq doesn't use it. This results in the suspicious behavior of resolving directory symlinks based on the contents of / instead of the alternate root. This adds a prefix argument to path_strv_canonicalize which will now prepend the prefix, if given, to every path in the list. To avoid answering what a relative path means when called with a root prefix path_strv_canonicalize is now path_strv_canonicalize_absolute and only considers absolute paths. Fortunately all users of already call path_strv_canonicalize with a list of absolute paths.

strv: multiple cleanups - turn strv_merge into strv_extend_strv. appending strv b to the end of strv a instead of creating a new strv - strv_append: remove in favor of strv_extend and strv_push. - strv_remove: write slightly more elegant - strv_remove_prefix: remove unused function - strv_overlap: use strv_contains - strv_printf: STRV_FOREACH handles NULL correctly

move _cleanup_ attribute in front of the type http://lists.freedesktop.org/archives/systemd-devel/2013-April/010510.html

path-lookup: downgrade again the messages where we log for units This partially reverts 7ad94c716d6403233d04c4d37cb14df958c9b65d. After that commit commands such as "systemctl enable" and friends printed the search path information multiple times in its output, which is ugly. If we want the search paths to be printed at a higher log level, then we should do this in PID 1 only, i.e. split the printing out of the normal path lookup logic and invoke that explicitly from PID 1 but not in the auxiliary tools.

unit: rework resource management API This introduces a new static list of known attributes and their special semantics. This means that cgroup attribute values can now be automatically translated from user to kernel notation for command line set settings, too. This also adds proper support for multi-line attributes.

systemd: raise level of message about lookup paths This can be pretty important for the user, and is not trivial to figure out in all cases. Also show failing path in error messages.

systemd: do not remove empty paths from unit lookup path The ability to start a new unit with 'systemctl start ...' should not depend on whether there are other units in the directory. Previously, an additional 'systemctl daemon-reload' would be necessary to tell systemd to update the list of unit lookup paths.

core: move ManagerRunningAs to shared Note: I did s/MANAGER/SYSTEMD/ everywhere, even though it makes the patch quite verbose. Nevertheless, keeping MANAGER prefix in some places, and SYSTEMD prefix in others would just lead to confusion down the road. Better to rip off the band-aid now.

mkdir: append _label to all mkdir() calls that explicitly set the selinux context

manager: rework generator logic Previously generated units were always placed at the end of the search path. With this change there will be three unit dirs instead of one, to place generated entries at the beginning, in the middle and at the end of the search path: beginning: for units that need to override all configuration, regardless of user or vendor. Example use: system-update-generator uses this to temporarily redirect default.target. middle: for units that need to override vendor configuration, but not vendor configuration. Example use: /etc/fstab should override vendor supplied configuration (think /tmp), but should not override native user configuration. end: does not override anything but is available as well. Possible usage might be to convert D-Bus bus service files to native units but allowing vendor supplied native units to win.

util: split-out path-util.[ch]

move more common files to shared/ and add them to shared.la